2.6.9

changelog.md

@@ -1,5 +1,48 @@
 # Changelog
 
+## 2025-03-26 - 2.6.9 - fix(cli)
+Improve console output formatting for status banners and logging messages
+
+- Standardize banner messages in daemon status updates
+- Refine version information banner in nupst logging
+- Update UPS connection and status banners in systemd
+
+## 2025-03-26 - 2.6.8 - fix(cli)
+Improve CLI formatting, refine debug option filtering, and remove unused dgram import in SNMP manager
+
+- Standardize whitespace and formatting in ts/cli.ts for consistency
+- Refine argument filtering for debug mode and prompt messages
+- Remove unused 'dgram' import from ts/snmp/manager.ts
+
+## 2025-03-26 - 2.6.7 - fix(setup.sh)
+Clarify net-snmp dependency installation message in setup.sh
+
+- Updated echo statement to indicate installation of net-snmp along with 2 subdependencies
+- Improves clarity on dependency installation during setup
+
+## 2025-03-26 - 2.6.6 - fix(setup.sh)
+Improve setup script to detect and execute npm-cli.js directly using the Node.js binary
+
+- Replace use of the npm binary with direct execution of npm-cli.js
+- Add fallback logic to locate npm-cli.js when not found at the expected path
+- Simplify cleanup by removing unnecessary PATH modifications
+
+## 2025-03-26 - 2.6.5 - fix(daemon, setup)
+Improve shutdown command detection and fallback logic; update setup script to use absolute Node/npm paths
+
+- Use execFileAsync to execute shutdown commands reliably
+- Add multiple fallback alternatives for shutdown and emergency shutdown handling
+- Update setup.sh to log the Node and NPM versions using absolute paths without modifying PATH
+
+## 2025-03-26 - 2.6.4 - fix(setup)
+Improve installation process in setup script by cleaning up package files and ensuring a minimal net-snmp dependency installation.
+
+- Remove existing package-lock.json along with node_modules to prevent stale artifacts.
+- Back up the original package.json before modifying it.
+- Create a minimal package.json with only the net-snmp dependency based on the backed-up version.
+- Use a clean install to guarantee that only net-snmp is installed.
+- Restore the original package.json if the installation fails.
+
 ## 2025-03-26 - 2.6.3 - fix(setup)
 Update setup script to install only net-snmp dependency and create a minimal package-lock.json for better dependency control.
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@serve.zone/nupst",
-  "version": "2.6.3",
+  "version": "2.6.9",
   "description": "Node.js UPS Shutdown Tool for SNMP-enabled UPS devices",
   "main": "dist/index.js",
   "bin": {

pnpm-lock.yaml

@@ -9,7 +9,7 @@ importers:
   .:
     dependencies:
       net-snmp:
-        specifier: ^3.20.0
+        specifier: 3.20.0
         version: 3.20.0
     devDependencies:
       '@git.zone/tsbuild':

setup.sh

@@ -239,57 +239,89 @@ echo "dist_ts directory successfully downloaded from npm registry."
 # Make launcher script executable
 chmod +x "$SCRIPT_DIR/bin/nupst"
 
-# Add our Node.js bin directory to the PATH temporarily
+# Set up Node.js binary path
 NODE_BIN_DIR="$SCRIPT_DIR/vendor/$NODE_DIR/bin"
-OLD_PATH="$PATH"
-export PATH="$NODE_BIN_DIR:$PATH"
+NODE_BIN="$NODE_BIN_DIR/node"
+NPM_CLI_JS="$NODE_BIN_DIR/../lib/node_modules/npm/bin/npm-cli.js"
 
-# Remove existing node_modules directory
-echo "Removing existing node_modules directory..."
+# Ensure we have executable permissions
+chmod +x "$NODE_BIN"
+
+# Make sure the npm-cli.js exists
+if [ ! -f "$NPM_CLI_JS" ]; then
+  # Try to find npm-cli.js
+  NPM_CLI_JS=$(find "$NODE_BIN_DIR/.." -name "npm-cli.js" | head -1)
+  
+  if [ -z "$NPM_CLI_JS" ]; then
+    echo "Warning: Could not find npm-cli.js, npm commands may fail"
+    # Set to a fallback value so code can continue
+    NPM_CLI_JS="$NODE_BIN_DIR/npm"
+  else
+    echo "Found npm-cli.js at: $NPM_CLI_JS"
+  fi
+fi
+
+# Display which binaries we're using
+echo "Using Node binary: $NODE_BIN"
+echo "Using NPM CLI JS: $NPM_CLI_JS"
+
+# Remove existing node_modules directory and package files
+echo "Cleaning up existing installation..."
 rm -rf "$SCRIPT_DIR/node_modules"
+rm -f "$SCRIPT_DIR/package-lock.json"
 
-# Install ONLY the net-snmp production dependency
-echo "Installing ONLY net-snmp production dependency..."
-echo "Using Node.js binary from: $NODE_BIN_DIR"
-echo "Node version: $(node --version)"
-echo "NPM version: $(npm --version)"
+# Back up existing package.json if it exists
+if [ -f "$SCRIPT_DIR/package.json" ]; then
+  echo "Backing up existing package.json..."
+  cp "$SCRIPT_DIR/package.json" "$SCRIPT_DIR/package.json.bak"
+fi
 
-# Install just net-snmp directly, don't rely on package.json
-npm --prefix "$SCRIPT_DIR" install --no-save net-snmp@3.20.0 --no-audit --no-fund
+# Create a clean minimal package.json with ONLY net-snmp dependency
+echo "Creating minimal package.json with only net-snmp dependency..."
+VERSION=$(grep -o '"version": "[^"]*"' "$SCRIPT_DIR/package.json.bak" | head -1 | cut -d'"' -f4 || echo "2.6.3")
+echo '{
+  "name": "@serve.zone/nupst",
+  "version": "'$VERSION'",
+  "description": "Node.js UPS Shutdown Tool for SNMP-enabled UPS devices",
+  "main": "dist_ts/index.js",
+  "type": "module",
+  "bin": {
+    "nupst": "bin/nupst"
+  },
+  "dependencies": {
+    "net-snmp": "3.20.0"
+  },
+  "engines": {
+    "node": ">=16.0.0"
+  },
+  "private": true
+}' > "$SCRIPT_DIR/package.json"
 
-# Verify only net-snmp is installed
-echo "Verifying only net-snmp is installed in node_modules..."
-find "$SCRIPT_DIR/node_modules" -maxdepth 1 -type d | sort
+# Install ONLY net-snmp
+echo "Installing ONLY net-snmp dependency (+ 2 subdependencies)..."
+echo "Node version: $("$NODE_BIN" --version)"
+echo "Executing NPM directly with Node.js"
+
+# Execute npm-cli.js directly with our Node.js binary
+"$NODE_BIN" "$NPM_CLI_JS" --prefix "$SCRIPT_DIR" install --no-audit --no-fund
 
 INSTALL_STATUS=$?
 if [ $INSTALL_STATUS -ne 0 ]; then
   echo "Error: Failed to install net-snmp dependency. NUPST may not function correctly."
-  echo "You can try to install dependencies manually by running:"
-  echo "cd $SCRIPT_DIR && npm install net-snmp@3.20.0"
+  echo "Restoring original package.json..."
+  mv "$SCRIPT_DIR/package.json.bak" "$SCRIPT_DIR/package.json"
+  exit 1
 else
   echo "net-snmp dependency installed successfully."
+  # Show what's actually installed
+  echo "Installed modules:"
+  find "$SCRIPT_DIR/node_modules" -maxdepth 1 -type d | grep -v "^$SCRIPT_DIR/node_modules$" | sort
   
-  # Create minimal package-lock.json if it doesn't exist
-  if [ ! -f "$SCRIPT_DIR/package-lock.json" ]; then
-    echo "Creating minimal package-lock.json..."
-    echo '{
-  "name": "@serve.zone/nupst",
-  "version": "2.6.2",
-  "lockfileVersion": 2,
-  "requires": true,
-  "packages": {
-    "": {
-      "dependencies": {
-        "net-snmp": "3.20.0"
-      }
-    }
-  }
-}' > "$SCRIPT_DIR/package-lock.json"
-  fi
+  # Remove backup if successful
+  rm -f "$SCRIPT_DIR/package.json.bak"
 fi
 
-# Restore the original PATH
-export PATH="$OLD_PATH"
+# No temporary files to clean up
 
 echo "NUPST setup completed successfully."
 echo "You can now run NUPST using: $SCRIPT_DIR/bin/nupst"

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@serve.zone/nupst',
-  version: '2.6.3',
+  version: '2.6.9',
   description: 'Node.js UPS Shutdown Tool for SNMP-enabled UPS devices'
 }

ts/cli.ts

@@ -30,7 +30,7 @@ export class NupstCli {
       // Enable debug mode in the SNMP client
       this.nupst.getSnmp().enableDebug();
     }
-    
+
     // Get the command (default to help if none provided)
     const command = args[2] || 'help';
 
@@ -46,8 +46,8 @@ export class NupstCli {
   private extractDebugOptions(args: string[]): { debugMode: boolean; cleanedArgs: string[] } {
     const debugMode = args.includes('--debug') || args.includes('-d');
     // Remove debug flags from args
-    const cleanedArgs = args.filter(arg => arg !== '--debug' && arg !== '-d');
-    
+    const cleanedArgs = args.filter((arg) => arg !== '--debug' && arg !== '-d');
+
     return { debugMode, cleanedArgs };
   }
 
@@ -85,23 +85,23 @@ export class NupstCli {
       case 'disable':
         await this.disable();
         break;
-        
+
       case 'setup':
         await this.setup();
         break;
-        
+
       case 'test':
         await this.test(debugMode);
         break;
-        
+
       case 'update':
         await this.update();
         break;
-        
+
       case 'uninstall':
         await this.uninstall();
         break;
-        
+
       case 'config':
         await this.showConfig();
         break;
@@ -149,17 +149,17 @@ export class NupstCli {
       // Use exec with spawn to properly follow logs in real-time
       const { spawn } = await import('child_process');
       console.log('Tailing nupst service logs (Ctrl+C to exit)...\n');
-      
+
       const journalctl = spawn('journalctl', ['-u', 'nupst.service', '-n', '50', '-f'], {
-        stdio: ['ignore', 'inherit', 'inherit']
+        stdio: ['ignore', 'inherit', 'inherit'],
       });
-      
+
       // Forward signals to child process
       process.on('SIGINT', () => {
         journalctl.kill('SIGINT');
         process.exit(0);
       });
-      
+
       // Wait for process to exit
       await new Promise<void>((resolve) => {
         journalctl.on('exit', () => resolve());
@@ -229,21 +229,21 @@ export class NupstCli {
         console.log('│ SNMP debugging enabled - detailed logs will be shown');
         console.log('└──────────────────────────────────────────┘');
       }
-      
+
       // Try to load the configuration
       try {
         await this.nupst.getDaemon().loadConfig();
       } catch (error) {
         console.error('┌─ Configuration Error ─────────────────────┐');
         console.error('│ No configuration found.');
-        console.error('│ Please run \'nupst setup\' first to create a configuration.');
+        console.error("│ Please run 'nupst setup' first to create a configuration.");
         console.error('└──────────────────────────────────────────┘');
         return;
       }
-      
+
       // Get current configuration
       const config = this.nupst.getDaemon().getConfig();
-      
+
       this.displayTestConfig(config);
       await this.testConnection(config);
     } catch (error) {
@@ -262,26 +262,26 @@ export class NupstCli {
     console.log(`│   Port: ${config.snmp.port}`);
     console.log(`│   Version: ${config.snmp.version}`);
     console.log(`│   UPS Model: ${config.snmp.upsModel || 'cyberpower'}`);
-    
+
     if (config.snmp.version === 1 || config.snmp.version === 2) {
       console.log(`│   Community: ${config.snmp.community}`);
     } else if (config.snmp.version === 3) {
       console.log(`│   Security Level: ${config.snmp.securityLevel}`);
       console.log(`│   Username: ${config.snmp.username}`);
-      
+
       // Show auth and privacy details based on security level
       if (config.snmp.securityLevel === 'authNoPriv' || config.snmp.securityLevel === 'authPriv') {
         console.log(`│   Auth Protocol: ${config.snmp.authProtocol || 'None'}`);
       }
-      
+
       if (config.snmp.securityLevel === 'authPriv') {
         console.log(`│   Privacy Protocol: ${config.snmp.privProtocol || 'None'}`);
       }
-      
+
       // Show timeout value
       console.log(`│   Timeout: ${config.snmp.timeout / 1000} seconds`);
     }
-    
+
     // Show OIDs if custom model is selected
     if (config.snmp.upsModel === 'custom' && config.snmp.customOIDs) {
       console.log('│ Custom OIDs:');
@@ -304,20 +304,20 @@ export class NupstCli {
     console.log('\nTesting connection to UPS...');
     try {
       // Create a test config with a short timeout
-      const testConfig = { 
+      const testConfig = {
         ...config.snmp,
-        timeout: Math.min(config.snmp.timeout, 10000) // Use at most 10 seconds for testing
+        timeout: Math.min(config.snmp.timeout, 10000), // Use at most 10 seconds for testing
       };
-      
+
       const status = await this.nupst.getSnmp().getUpsStatus(testConfig);
-      
+
       console.log('┌─ Connection Successful! ─────────────────┐');
       console.log('│ UPS Status:');
       console.log(`│   Power Status: ${status.powerStatus}`);
       console.log(`│   Battery Capacity: ${status.batteryCapacity}%`);
       console.log(`│   Runtime Remaining: ${status.batteryRuntime} minutes`);
       console.log('└──────────────────────────────────────────┘');
-      
+
       // Check status against thresholds if on battery
       if (status.powerStatus === 'onBattery') {
         this.analyzeThresholds(status, config);
@@ -326,7 +326,7 @@ export class NupstCli {
       console.error('┌─ Connection Failed! ───────────────────────┐');
       console.error(`│ Error: ${error.message}`);
       console.error('└──────────────────────────────────────────┘');
-      console.log('\nPlease check your settings and run \'nupst setup\' to reconfigure.');
+      console.log("\nPlease check your settings and run 'nupst setup' to reconfigure.");
     }
   }
 
@@ -337,25 +337,33 @@ export class NupstCli {
    */
   private analyzeThresholds(status: any, config: any): void {
     console.log('┌─ Threshold Analysis ───────────────────────┐');
-    
+
     if (status.batteryCapacity < config.thresholds.battery) {
       console.log('│ ⚠️ WARNING: Battery capacity below threshold');
-      console.log(`│   Current: ${status.batteryCapacity}% | Threshold: ${config.thresholds.battery}%`);
+      console.log(
+        `│   Current: ${status.batteryCapacity}% | Threshold: ${config.thresholds.battery}%`
+      );
       console.log('│   System would initiate shutdown');
     } else {
       console.log('│ ✓ Battery capacity above threshold');
-      console.log(`│   Current: ${status.batteryCapacity}% | Threshold: ${config.thresholds.battery}%`);
+      console.log(
+        `│   Current: ${status.batteryCapacity}% | Threshold: ${config.thresholds.battery}%`
+      );
     }
-    
+
     if (status.batteryRuntime < config.thresholds.runtime) {
       console.log('│ ⚠️ WARNING: Runtime below threshold');
-      console.log(`│   Current: ${status.batteryRuntime} min | Threshold: ${config.thresholds.runtime} min`);
+      console.log(
+        `│   Current: ${status.batteryRuntime} min | Threshold: ${config.thresholds.runtime} min`
+      );
       console.log('│   System would initiate shutdown');
     } else {
       console.log('│ ✓ Runtime above threshold');
-      console.log(`│   Current: ${status.batteryRuntime} min | Threshold: ${config.thresholds.runtime} min`);
+      console.log(
+        `│   Current: ${status.batteryRuntime} min | Threshold: ${config.thresholds.runtime} min`
+      );
     }
-    
+
     console.log('└──────────────────────────────────────────┘');
   }
 
@@ -386,60 +394,72 @@ Options:
                         (Example: nupst test --debug)
 `);
   }
-  
+
   /**
    * Update NUPST from repository and refresh systemd service
    */
   private async update(): Promise<void> {
     try {
       // Check if running as root
-      this.checkRootAccess('This command must be run as root to update NUPST and refresh the systemd service.');
-      
+      this.checkRootAccess(
+        'This command must be run as root to update NUPST and refresh the systemd service.'
+      );
+
       console.log('┌─ NUPST Update Process ──────────────────┐');
       console.log('│ Updating NUPST from repository...');
-      
+
       // Determine the installation directory (assuming it's either /opt/nupst or the current directory)
       const { existsSync } = await import('fs');
       let installDir = '/opt/nupst';
-      
+
       if (!existsSync(installDir)) {
         // If not installed in /opt/nupst, use the current directory
         const { dirname } = await import('path');
         installDir = dirname(dirname(process.argv[1])); // Go up two levels from the executable
         console.log(`│ Using local installation directory: ${installDir}`);
       }
-      
+
       try {
         // 1. Update the repository
         console.log('│ Pulling latest changes from git repository...');
-        execSync(`cd ${installDir} && git fetch origin && git reset --hard origin/main`, { stdio: 'pipe' });
-        
+        execSync(`cd ${installDir} && git fetch origin && git reset --hard origin/main`, {
+          stdio: 'pipe',
+        });
+
         // 2. Run the install.sh script
         console.log('│ Running install.sh to update NUPST...');
         execSync(`cd ${installDir} && bash ./install.sh`, { stdio: 'pipe' });
-        
+
         // 3. Run the setup.sh script with force flag to update Node.js and dependencies
         console.log('│ Running setup.sh to update Node.js and dependencies...');
         execSync(`cd ${installDir} && bash ./setup.sh --force`, { stdio: 'pipe' });
-        
+
         // 4. Refresh the systemd service
         console.log('│ Refreshing systemd service...');
-        
+
         // First check if service exists
-        const serviceExists = execSync('systemctl list-unit-files | grep nupst.service').toString().includes('nupst.service');
-        
+        let serviceExists = false;
+        try {
+          const output = execSync('systemctl list-unit-files | grep nupst.service').toString();
+          serviceExists = output.includes('nupst.service');
+        } catch (error) {
+          // If grep fails (service not found), serviceExists remains false
+          serviceExists = false;
+        }
+
         if (serviceExists) {
           // Stop the service if it's running
-          const isRunning = execSync('systemctl is-active nupst.service || true').toString().trim() === 'active';
+          const isRunning =
+            execSync('systemctl is-active nupst.service || true').toString().trim() === 'active';
           if (isRunning) {
             console.log('│ Stopping nupst service...');
             execSync('systemctl stop nupst.service');
           }
-          
+
           // Reinstall the service
           console.log('│ Reinstalling systemd service...');
           await this.nupst.getSystemd().install();
-          
+
           // Restart the service if it was running
           if (isRunning) {
             console.log('│ Restarting nupst service...');
@@ -449,7 +469,7 @@ Options:
           console.log('│ Systemd service not installed, skipping service refresh.');
           console.log('│ Run "nupst enable" to install the service.');
         }
-        
+
         console.log('│ Update completed successfully!');
         console.log('└──────────────────────────────────────────┘');
       } catch (error) {
@@ -463,7 +483,7 @@ Options:
       process.exit(1);
     }
   }
-  
+
   /**
    * Interactive setup for configuring SNMP settings
    */
@@ -471,12 +491,12 @@ Options:
     try {
       // Import readline module (ESM style)
       const readline = await import('readline');
-      
+
       const rl = readline.createInterface({
         input: process.stdin,
-        output: process.stdout
+        output: process.stdout,
       });
-      
+
       // Helper function to prompt for input
       const prompt = (question: string): Promise<string> => {
         return new Promise((resolve) => {
@@ -485,7 +505,7 @@ Options:
           });
         });
       };
-      
+
       try {
         await this.runSetupProcess(prompt);
       } finally {
@@ -504,7 +524,7 @@ Options:
     console.log('\nNUPST Interactive Setup');
     console.log('======================\n');
     console.log('This will guide you through configuring your UPS SNMP settings.\n');
-    
+
     // Try to load existing config if available
     let config;
     try {
@@ -518,24 +538,24 @@ Options:
 
     // Gather SNMP settings
     config = await this.gatherSnmpSettings(config, prompt);
-    
+
     // Gather threshold settings
     config = await this.gatherThresholdSettings(config, prompt);
-    
+
     // Gather UPS model settings
     config = await this.gatherUpsModelSettings(config, prompt);
-    
+
     // Save the configuration
     await this.nupst.getDaemon().saveConfig(config);
-    
+
     this.displayConfigSummary(config);
-    
+
     // Test the connection if requested
     await this.optionallyTestConnection(config, prompt);
-    
+
     // Check if service is running and restart it if needed
     await this.restartServiceIfRunning();
-    
+
     console.log('\nSetup complete!');
     await this.optionallyEnableService(prompt);
   }
@@ -546,18 +566,21 @@ Options:
    * @param prompt Function to prompt for user input
    * @returns Updated configuration
    */
-  private async gatherSnmpSettings(config: any, prompt: (question: string) => Promise<string>): Promise<any> {
+  private async gatherSnmpSettings(
+    config: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<any> {
     // SNMP IP Address
     const defaultHost = config.snmp.host;
     const host = await prompt(`UPS IP Address [${defaultHost}]: `);
     config.snmp.host = host.trim() || defaultHost;
-    
+
     // SNMP Port
     const defaultPort = config.snmp.port;
     const portInput = await prompt(`SNMP Port [${defaultPort}]: `);
     const port = parseInt(portInput, 10);
-    config.snmp.port = (portInput.trim() && !isNaN(port)) ? port : defaultPort;
-    
+    config.snmp.port = portInput.trim() && !isNaN(port) ? port : defaultPort;
+
     // SNMP Version
     const defaultVersion = config.snmp.version;
     console.log('\nSNMP Version:');
@@ -566,8 +589,11 @@ Options:
     console.log('  3) SNMPv3 (with security features)');
     const versionInput = await prompt(`Select SNMP version [${defaultVersion}]: `);
     const version = parseInt(versionInput, 10);
-    config.snmp.version = (versionInput.trim() && (version === 1 || version === 2 || version === 3)) ? version : defaultVersion;
-    
+    config.snmp.version =
+      versionInput.trim() && (version === 1 || version === 2 || version === 3)
+        ? version
+        : defaultVersion;
+
     if (config.snmp.version === 1 || config.snmp.version === 2) {
       // SNMP Community String (for v1/v2c)
       const defaultCommunity = config.snmp.community || 'public';
@@ -577,7 +603,7 @@ Options:
       // SNMP v3 settings
       config = await this.gatherSnmpV3Settings(config, prompt);
     }
-    
+
     return config;
   }
 
@@ -587,20 +613,27 @@ Options:
    * @param prompt Function to prompt for user input
    * @returns Updated configuration
    */
-  private async gatherSnmpV3Settings(config: any, prompt: (question: string) => Promise<string>): Promise<any> {
+  private async gatherSnmpV3Settings(
+    config: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<any> {
     console.log('\nSNMPv3 Security Settings:');
-    
+
     // Security Level
     console.log('\nSecurity Level:');
     console.log('  1) noAuthNoPriv (No Authentication, No Privacy)');
     console.log('  2) authNoPriv (Authentication, No Privacy)');
     console.log('  3) authPriv (Authentication and Privacy)');
-    const defaultSecLevel = config.snmp.securityLevel ? 
-      (config.snmp.securityLevel === 'noAuthNoPriv' ? 1 : 
-       config.snmp.securityLevel === 'authNoPriv' ? 2 : 3) : 3;
+    const defaultSecLevel = config.snmp.securityLevel
+      ? config.snmp.securityLevel === 'noAuthNoPriv'
+        ? 1
+        : config.snmp.securityLevel === 'authNoPriv'
+        ? 2
+        : 3
+      : 3;
     const secLevelInput = await prompt(`Select Security Level [${defaultSecLevel}]: `);
     const secLevel = parseInt(secLevelInput, 10) || defaultSecLevel;
-    
+
     if (secLevel === 1) {
       config.snmp.securityLevel = 'noAuthNoPriv';
       // No auth, no priv - clear out authentication and privacy settings
@@ -622,31 +655,33 @@ Options:
       // Set appropriate timeout for security level
       config.snmp.timeout = 15000; // 15 seconds for full encryption
     }
-    
+
     // Username
     const defaultUsername = config.snmp.username || '';
     const username = await prompt(`SNMPv3 Username [${defaultUsername}]: `);
     config.snmp.username = username.trim() || defaultUsername;
-    
+
     if (secLevel >= 2) {
       // Authentication settings
       config = await this.gatherAuthenticationSettings(config, prompt);
-      
+
       if (secLevel === 3) {
         // Privacy settings
         config = await this.gatherPrivacySettings(config, prompt);
       }
-      
+
       // Allow customizing the timeout value
       const defaultTimeout = config.snmp.timeout / 1000; // Convert from ms to seconds for display
-      console.log('\nSNMPv3 operations with authentication and privacy may require longer timeouts.');
+      console.log(
+        '\nSNMPv3 operations with authentication and privacy may require longer timeouts.'
+      );
       const timeoutInput = await prompt(`SNMP Timeout in seconds [${defaultTimeout}]: `);
       const timeout = parseInt(timeoutInput, 10);
       if (timeoutInput.trim() && !isNaN(timeout)) {
         config.snmp.timeout = timeout * 1000; // Convert to ms
       }
     }
-    
+
     return config;
   }
 
@@ -656,21 +691,26 @@ Options:
    * @param prompt Function to prompt for user input
    * @returns Updated configuration
    */
-  private async gatherAuthenticationSettings(config: any, prompt: (question: string) => Promise<string>): Promise<any> {
+  private async gatherAuthenticationSettings(
+    config: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<any> {
     // Authentication protocol
     console.log('\nAuthentication Protocol:');
     console.log('  1) MD5');
     console.log('  2) SHA');
     const defaultAuthProtocol = config.snmp.authProtocol === 'SHA' ? 2 : 1;
-    const authProtocolInput = await prompt(`Select Authentication Protocol [${defaultAuthProtocol}]: `);
+    const authProtocolInput = await prompt(
+      `Select Authentication Protocol [${defaultAuthProtocol}]: `
+    );
     const authProtocol = parseInt(authProtocolInput, 10) || defaultAuthProtocol;
     config.snmp.authProtocol = authProtocol === 2 ? 'SHA' : 'MD5';
-    
+
     // Authentication Key/Password
     const defaultAuthKey = config.snmp.authKey || '';
     const authKey = await prompt(`Authentication Password ${defaultAuthKey ? '[*****]' : ''}: `);
     config.snmp.authKey = authKey.trim() || defaultAuthKey;
-    
+
     return config;
   }
 
@@ -680,7 +720,10 @@ Options:
    * @param prompt Function to prompt for user input
    * @returns Updated configuration
    */
-  private async gatherPrivacySettings(config: any, prompt: (question: string) => Promise<string>): Promise<any> {
+  private async gatherPrivacySettings(
+    config: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<any> {
     // Privacy protocol
     console.log('\nPrivacy Protocol:');
     console.log('  1) DES');
@@ -689,12 +732,12 @@ Options:
     const privProtocolInput = await prompt(`Select Privacy Protocol [${defaultPrivProtocol}]: `);
     const privProtocol = parseInt(privProtocolInput, 10) || defaultPrivProtocol;
     config.snmp.privProtocol = privProtocol === 2 ? 'AES' : 'DES';
-    
+
     // Privacy Key/Password
     const defaultPrivKey = config.snmp.privKey || '';
     const privKey = await prompt(`Privacy Password ${defaultPrivKey ? '[*****]' : ''}: `);
     config.snmp.privKey = privKey.trim() || defaultPrivKey;
-    
+
     return config;
   }
 
@@ -704,33 +747,43 @@ Options:
    * @param prompt Function to prompt for user input
    * @returns Updated configuration
    */
-  private async gatherThresholdSettings(config: any, prompt: (question: string) => Promise<string>): Promise<any> {
+  private async gatherThresholdSettings(
+    config: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<any> {
     console.log('\nShutdown Thresholds:');
-    
+
     // Battery threshold
     const defaultBatteryThreshold = config.thresholds.battery;
-    const batteryThresholdInput = await prompt(`Battery percentage threshold [${defaultBatteryThreshold}%]: `);
+    const batteryThresholdInput = await prompt(
+      `Battery percentage threshold [${defaultBatteryThreshold}%]: `
+    );
     const batteryThreshold = parseInt(batteryThresholdInput, 10);
-    config.thresholds.battery = (batteryThresholdInput.trim() && !isNaN(batteryThreshold)) 
-      ? batteryThreshold 
-      : defaultBatteryThreshold;
-    
+    config.thresholds.battery =
+      batteryThresholdInput.trim() && !isNaN(batteryThreshold)
+        ? batteryThreshold
+        : defaultBatteryThreshold;
+
     // Runtime threshold
     const defaultRuntimeThreshold = config.thresholds.runtime;
-    const runtimeThresholdInput = await prompt(`Runtime minutes threshold [${defaultRuntimeThreshold} minutes]: `);
+    const runtimeThresholdInput = await prompt(
+      `Runtime minutes threshold [${defaultRuntimeThreshold} minutes]: `
+    );
     const runtimeThreshold = parseInt(runtimeThresholdInput, 10);
-    config.thresholds.runtime = (runtimeThresholdInput.trim() && !isNaN(runtimeThreshold)) 
-      ? runtimeThreshold 
-      : defaultRuntimeThreshold;
-    
+    config.thresholds.runtime =
+      runtimeThresholdInput.trim() && !isNaN(runtimeThreshold)
+        ? runtimeThreshold
+        : defaultRuntimeThreshold;
+
     // Check interval
     const defaultInterval = config.checkInterval / 1000; // Convert from ms to seconds for display
     const intervalInput = await prompt(`Check interval in seconds [${defaultInterval}]: `);
     const interval = parseInt(intervalInput, 10);
-    config.checkInterval = (intervalInput.trim() && !isNaN(interval)) 
-      ? interval * 1000 // Convert to ms
-      : defaultInterval * 1000;
-    
+    config.checkInterval =
+      intervalInput.trim() && !isNaN(interval)
+        ? interval * 1000 // Convert to ms
+        : defaultInterval * 1000;
+
     return config;
   }
 
@@ -740,7 +793,10 @@ Options:
    * @param prompt Function to prompt for user input
    * @returns Updated configuration
    */
-  private async gatherUpsModelSettings(config: any, prompt: (question: string) => Promise<string>): Promise<any> {
+  private async gatherUpsModelSettings(
+    config: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<any> {
     console.log('\nUPS Model Selection:');
     console.log('  1) CyberPower');
     console.log('  2) APC');
@@ -748,17 +804,25 @@ Options:
     console.log('  4) TrippLite');
     console.log('  5) Liebert/Vertiv');
     console.log('  6) Custom (Advanced)');
-    
-    const defaultModelValue = config.snmp.upsModel === 'cyberpower' ? 1 :
-                           config.snmp.upsModel === 'apc' ? 2 :
-                           config.snmp.upsModel === 'eaton' ? 3 :
-                           config.snmp.upsModel === 'tripplite' ? 4 :
-                           config.snmp.upsModel === 'liebert' ? 5 : 
-                           config.snmp.upsModel === 'custom' ? 6 : 1;
-                           
+
+    const defaultModelValue =
+      config.snmp.upsModel === 'cyberpower'
+        ? 1
+        : config.snmp.upsModel === 'apc'
+        ? 2
+        : config.snmp.upsModel === 'eaton'
+        ? 3
+        : config.snmp.upsModel === 'tripplite'
+        ? 4
+        : config.snmp.upsModel === 'liebert'
+        ? 5
+        : config.snmp.upsModel === 'custom'
+        ? 6
+        : 1;
+
     const modelInput = await prompt(`Select UPS model [${defaultModelValue}]: `);
     const modelValue = parseInt(modelInput, 10) || defaultModelValue;
-    
+
     if (modelValue === 1) {
       config.snmp.upsModel = 'cyberpower';
     } else if (modelValue === 2) {
@@ -773,20 +837,20 @@ Options:
       config.snmp.upsModel = 'custom';
       console.log('\nEnter custom OIDs for your UPS:');
       console.log('(Leave blank to use standard RFC 1628 OIDs as fallback)');
-      
+
       // Custom OIDs
       const powerStatusOID = await prompt('Power Status OID: ');
       const batteryCapacityOID = await prompt('Battery Capacity OID: ');
       const batteryRuntimeOID = await prompt('Battery Runtime OID: ');
-      
+
       // Create custom OIDs object
       config.snmp.customOIDs = {
         POWER_STATUS: powerStatusOID.trim(),
         BATTERY_CAPACITY: batteryCapacityOID.trim(),
-        BATTERY_RUNTIME: batteryRuntimeOID.trim()
+        BATTERY_RUNTIME: batteryRuntimeOID.trim(),
       };
     }
-    
+
     return config;
   }
 
@@ -799,8 +863,10 @@ Options:
     console.log(`│ SNMP Host: ${config.snmp.host}:${config.snmp.port}`);
     console.log(`│ SNMP Version: ${config.snmp.version}`);
     console.log(`│ UPS Model: ${config.snmp.upsModel}`);
-    console.log(`│ Thresholds: ${config.thresholds.battery}% battery, ${config.thresholds.runtime} min runtime`);
-    console.log(`│ Check Interval: ${config.checkInterval/1000} seconds`);
+    console.log(
+      `│ Thresholds: ${config.thresholds.battery}% battery, ${config.thresholds.runtime} min runtime`
+    );
+    console.log(`│ Check Interval: ${config.checkInterval / 1000} seconds`);
     console.log('└──────────────────────────────────────────┘\n');
   }
 
@@ -809,17 +875,22 @@ Options:
    * @param config Current configuration
    * @param prompt Function to prompt for user input
    */
-  private async optionallyTestConnection(config: any, prompt: (question: string) => Promise<string>): Promise<void> {
-    const testConnection = await prompt('Would you like to test the connection to your UPS? (y/N): ');
+  private async optionallyTestConnection(
+    config: any,
+    prompt: (question: string) => Promise<string>
+  ): Promise<void> {
+    const testConnection = await prompt(
+      'Would you like to test the connection to your UPS? (y/N): '
+    );
     if (testConnection.toLowerCase() === 'y') {
       console.log('\nTesting connection to UPS...');
       try {
         // Create a test config with a short timeout
-        const testConfig = { 
+        const testConfig = {
           ...config.snmp,
-          timeout: Math.min(config.snmp.timeout, 10000) // Use at most 10 seconds for testing
+          timeout: Math.min(config.snmp.timeout, 10000), // Use at most 10 seconds for testing
         };
-        
+
         const status = await this.nupst.getSnmp().getUpsStatus(testConfig);
         console.log('\n┌─ Connection Successful! ─────────────────┐');
         console.log('│ UPS Status:');
@@ -843,14 +914,15 @@ Options:
   private async restartServiceIfRunning(): Promise<void> {
     try {
       // Check if the service is active
-      const isActive = execSync('systemctl is-active nupst.service || true').toString().trim() === 'active';
-      
+      const isActive =
+        execSync('systemctl is-active nupst.service || true').toString().trim() === 'active';
+
       if (isActive) {
         // Service is running, restart it
         console.log('┌─ Service Update ─────────────────────────┐');
         console.log('│ Configuration has changed.');
         console.log('│ Restarting NUPST service to apply changes...');
-        
+
         try {
           if (process.getuid && process.getuid() === 0) {
             // We have root access, restart directly
@@ -866,7 +938,7 @@ Options:
           console.log('│ You may need to restart the service manually:');
           console.log('│   sudo systemctl restart nupst.service');
         }
-        
+
         console.log('└──────────────────────────────────────────┘');
       }
     } catch (error) {
@@ -878,18 +950,24 @@ Options:
    * Optionally enable and start systemd service
    * @param prompt Function to prompt for user input
    */
-  private async optionallyEnableService(prompt: (question: string) => Promise<string>): Promise<void> {
+  private async optionallyEnableService(
+    prompt: (question: string) => Promise<string>
+  ): Promise<void> {
     if (process.getuid && process.getuid() !== 0) {
       console.log('\nNote: Run "sudo nupst enable" to set up NUPST as a system service.');
     } else {
-      const setupService = await prompt('Would you like to enable NUPST as a system service? (y/N): ');
+      const setupService = await prompt(
+        'Would you like to enable NUPST as a system service? (y/N): '
+      );
       if (setupService.toLowerCase() === 'y') {
         try {
           await this.nupst.getSystemd().install();
           console.log('Service installed and enabled to start on boot.');
-          
+
           // Ask if the user wants to start the service now
-          const startService = await prompt('Would you like to start the NUPST service now? (Y/n): ');
+          const startService = await prompt(
+            'Would you like to start the NUPST service now? (Y/n): '
+          );
           if (startService.toLowerCase() !== 'n') {
             await this.nupst.getSystemd().start();
             console.log('NUPST service started successfully.');
@@ -902,7 +980,7 @@ Options:
       }
     }
   }
-  
+
   /**
    * Display the current configuration
    */
@@ -914,68 +992,75 @@ Options:
       } catch (error) {
         console.error('┌─ Configuration Error ─────────────────────┐');
         console.error('│ No configuration found.');
-        console.error('│ Please run \'nupst setup\' first to create a configuration.');
+        console.error("│ Please run 'nupst setup' first to create a configuration.");
         console.error('└──────────────────────────────────────────┘');
         return;
       }
-      
+
       // Get current configuration
       const config = this.nupst.getDaemon().getConfig();
-      
+
       console.log('┌─ NUPST Configuration ──────────────────────┐');
-      
+
       // SNMP Settings
       console.log('│ SNMP Settings:');
       console.log(`│   Host: ${config.snmp.host}`);
       console.log(`│   Port: ${config.snmp.port}`);
       console.log(`│   Version: ${config.snmp.version}`);
       console.log(`│   UPS Model: ${config.snmp.upsModel || 'cyberpower'}`);
-      
+
       if (config.snmp.version === 1 || config.snmp.version === 2) {
         console.log(`│   Community: ${config.snmp.community}`);
       } else if (config.snmp.version === 3) {
         console.log(`│   Security Level: ${config.snmp.securityLevel}`);
         console.log(`│   Username: ${config.snmp.username}`);
-        
+
         // Show auth and privacy details based on security level
-        if (config.snmp.securityLevel === 'authNoPriv' || config.snmp.securityLevel === 'authPriv') {
+        if (
+          config.snmp.securityLevel === 'authNoPriv' ||
+          config.snmp.securityLevel === 'authPriv'
+        ) {
           console.log(`│   Auth Protocol: ${config.snmp.authProtocol || 'None'}`);
         }
-        
+
         if (config.snmp.securityLevel === 'authPriv') {
           console.log(`│   Privacy Protocol: ${config.snmp.privProtocol || 'None'}`);
         }
-        
+
         // Show timeout value
         console.log(`│   Timeout: ${config.snmp.timeout / 1000} seconds`);
       }
-      
+
       // Show OIDs if custom model is selected
       if (config.snmp.upsModel === 'custom' && config.snmp.customOIDs) {
         console.log('│ Custom OIDs:');
         console.log(`│   Power Status: ${config.snmp.customOIDs.POWER_STATUS || 'Not set'}`);
-        console.log(`│   Battery Capacity: ${config.snmp.customOIDs.BATTERY_CAPACITY || 'Not set'}`);
+        console.log(
+          `│   Battery Capacity: ${config.snmp.customOIDs.BATTERY_CAPACITY || 'Not set'}`
+        );
         console.log(`│   Battery Runtime: ${config.snmp.customOIDs.BATTERY_RUNTIME || 'Not set'}`);
       }
-      
+
       // Thresholds
       console.log('│ Thresholds:');
       console.log(`│   Battery: ${config.thresholds.battery}%`);
       console.log(`│   Runtime: ${config.thresholds.runtime} minutes`);
       console.log(`│ Check Interval: ${config.checkInterval / 1000} seconds`);
-      
+
       // Configuration file location
       console.log('│');
       console.log('│ Configuration File Location:');
       console.log('│   /etc/nupst/config.json');
-      
+
       console.log('└──────────────────────────────────────────┘');
-      
+
       // Show service status
       try {
-        const isActive = execSync('systemctl is-active nupst.service || true').toString().trim() === 'active';
-        const isEnabled = execSync('systemctl is-enabled nupst.service || true').toString().trim() === 'enabled';
-        
+        const isActive =
+          execSync('systemctl is-active nupst.service || true').toString().trim() === 'active';
+        const isEnabled =
+          execSync('systemctl is-enabled nupst.service || true').toString().trim() === 'enabled';
+
         console.log('┌─ Service Status ─────────────────────────┐');
         console.log(`│ Service Active: ${isActive ? 'Yes' : 'No'}`);
         console.log(`│ Service Enabled: ${isEnabled ? 'Yes' : 'No'}`);
@@ -983,7 +1068,6 @@ Options:
       } catch (error) {
         // Ignore errors checking service status
       }
-      
     } catch (error) {
       console.error(`Failed to display configuration: ${error.message}`);
     }
@@ -999,12 +1083,12 @@ Options:
     try {
       // Import readline module for user input
       const readline = await import('readline');
-      
+
       const rl = readline.createInterface({
         input: process.stdin,
-        output: process.stdout
+        output: process.stdout,
       });
-      
+
       // Helper function to prompt for input
       const prompt = (question: string): Promise<string> => {
         return new Promise((resolve) => {
@@ -1019,11 +1103,13 @@ Options:
       console.log('This will completely remove NUPST from your system.\n');
 
       // Ask about removing configuration
-      const removeConfig = await prompt('Do you want to remove the NUPST configuration files? (y/N): ');
-      
+      const removeConfig = await prompt(
+        'Do you want to remove the NUPST configuration files? (y/N): '
+      );
+
       // Find the uninstall.sh script location
       let uninstallScriptPath: string;
-      
+
       // Try to determine script location based on executable path
       try {
         // For ESM, we can use import.meta.url, but since we might be in CJS
@@ -1031,16 +1117,13 @@ Options:
         const binPath = process.argv[1];
         const modulePath = dirname(dirname(binPath));
         uninstallScriptPath = join(modulePath, 'uninstall.sh');
-        
+
         // Check if the script exists
         await fs.access(uninstallScriptPath);
       } catch (error) {
         // If we can't find it in the expected location, try common installation paths
-        const commonPaths = [
-          '/opt/nupst/uninstall.sh',
-          join(process.cwd(), 'uninstall.sh')
-        ];
-        
+        const commonPaths = ['/opt/nupst/uninstall.sh', join(process.cwd(), 'uninstall.sh')];
+
         for (const path of commonPaths) {
           try {
             await fs.access(path);
@@ -1050,37 +1133,36 @@ Options:
             // Continue to next path
           }
         }
-        
+
         if (!uninstallScriptPath) {
           console.error('Could not locate uninstall.sh script. Aborting uninstall.');
           rl.close();
           process.exit(1);
         }
       }
-      
+
       // Close readline before executing script
       rl.close();
-      
+
       // Execute uninstall.sh with the appropriate option
       console.log(`\nRunning uninstaller from ${uninstallScriptPath}...`);
-      
+
       // Pass the configuration removal option as an environment variable
       const env = {
         ...process.env,
         REMOVE_CONFIG: removeConfig.toLowerCase() === 'y' ? 'yes' : 'no',
-        REMOVE_REPO: 'yes',  // Always remove repo as requested
-        NUPST_CLI_CALL: 'true'  // Flag to indicate this is being called from CLI
+        REMOVE_REPO: 'yes', // Always remove repo as requested
+        NUPST_CLI_CALL: 'true', // Flag to indicate this is being called from CLI
       };
-      
+
       // Run the uninstall script with sudo
-      execSync(`sudo bash ${uninstallScriptPath}`, { 
+      execSync(`sudo bash ${uninstallScriptPath}`, {
         env,
-        stdio: 'inherit'  // Show output in the terminal
+        stdio: 'inherit', // Show output in the terminal
       });
-      
     } catch (error) {
       console.error(`Uninstall failed: ${error.message}`);
       process.exit(1);
     }
   }
-}
+}

ts/daemon.ts

@@ -1,11 +1,12 @@
 import * as fs from 'fs';
 import * as path from 'path';
-import { exec } from 'child_process';
+import { exec, execFile } from 'child_process';
 import { promisify } from 'util';
 import { NupstSnmp } from './snmp/manager.js';
 import type { ISnmpConfig } from './snmp/types.js';
 
 const execAsync = promisify(exec);
+const execFileAsync = promisify(execFile);
 
 /**
  * Configuration interface for the daemon
@@ -225,8 +226,8 @@ export class NupstDaemon {
         
         // Log status changes
         if (status.powerStatus !== lastStatus) {
-          console.log('┌──────────────────────────────────────────┐');
-          console.log(`│ Power status changed: ${lastStatus} → ${status.powerStatus}`);
+          console.log('┌─ Power Status Change ─────────────────────┐');
+          console.log(`│ Status changed: ${lastStatus} → ${status.powerStatus}`);
           console.log('└──────────────────────────────────────────┘');
           lastStatus = status.powerStatus;
           lastLogTime = currentTime; // Reset log timer when status changes
@@ -234,8 +235,8 @@ export class NupstDaemon {
         // Log status periodically (at least every 5 minutes)
         else if (shouldLogStatus) {
           const timestamp = new Date().toISOString();
-          console.log('┌──────────────────────────────────────────┐');
-          console.log(`│ [${timestamp}] Periodic Status Update`);
+          console.log('┌─ Periodic Status Update ──────────────────┐');
+          console.log(`│ Timestamp: ${timestamp}`);
           console.log(`│ Power Status: ${status.powerStatus}`);
           console.log(`│ Battery: ${status.batteryCapacity}% | Runtime: ${status.batteryRuntime} min`);
           console.log('└──────────────────────────────────────────┘');
@@ -266,8 +267,8 @@ export class NupstDaemon {
     batteryCapacity: number,
     batteryRuntime: number
   }): Promise<void> {
-    console.log('┌─ UPS Status ───────────────────────────────┐');
-    console.log(`│ Battery: ${status.batteryCapacity}% | Runtime: ${status.batteryRuntime} min │`);
+    console.log('┌─ UPS Status ────────────────────────────┐');
+    console.log(`│ Battery: ${status.batteryCapacity}% | Runtime: ${status.batteryRuntime} min`);
     console.log('└──────────────────────────────────────────┘');
     
     // Check battery threshold
@@ -298,23 +299,101 @@ export class NupstDaemon {
     const shutdownDelayMinutes = 5;
     
     try {
-      // Execute shutdown command with delay to allow for VM graceful shutdown
-      const { stdout } = await execAsync(`shutdown -h +${shutdownDelayMinutes} "UPS battery critical, shutting down in ${shutdownDelayMinutes} minutes"`);
-      console.log('Shutdown initiated:', stdout);
-      console.log(`Allowing ${shutdownDelayMinutes} minutes for VMs to shut down safely`);
+      // Find shutdown command in common system paths
+      const shutdownPaths = [
+        '/sbin/shutdown',
+        '/usr/sbin/shutdown',
+        '/bin/shutdown',
+        '/usr/bin/shutdown'
+      ];
+      
+      let shutdownCmd = '';
+      for (const path of shutdownPaths) {
+        try {
+          if (fs.existsSync(path)) {
+            shutdownCmd = path;
+            console.log(`Found shutdown command at: ${shutdownCmd}`);
+            break;
+          }
+        } catch (e) {
+          // Continue checking other paths
+        }
+      }
+      
+      if (shutdownCmd) {
+        // Execute shutdown command with delay to allow for VM graceful shutdown
+        console.log(`Executing: ${shutdownCmd} -h +${shutdownDelayMinutes} "UPS battery critical..."`);
+        const { stdout } = await execFileAsync(shutdownCmd, [
+          '-h', 
+          `+${shutdownDelayMinutes}`, 
+          `UPS battery critical, shutting down in ${shutdownDelayMinutes} minutes`
+        ]);
+        console.log('Shutdown initiated:', stdout);
+        console.log(`Allowing ${shutdownDelayMinutes} minutes for VMs to shut down safely`);
+      } else {
+        // Try using the PATH to find shutdown
+        try {
+          console.log('Shutdown command not found in common paths, trying via PATH...');
+          const { stdout } = await execAsync(`shutdown -h +${shutdownDelayMinutes} "UPS battery critical, shutting down in ${shutdownDelayMinutes} minutes"`, {
+            env: process.env // Pass the current environment
+          });
+          console.log('Shutdown initiated:', stdout);
+        } catch (e) {
+          throw new Error(`Shutdown command not found: ${e.message}`);
+        }
+      }
       
       // Monitor UPS during shutdown and force immediate shutdown if battery gets too low
       console.log('Monitoring UPS during shutdown process...');
       await this.monitorDuringShutdown();
     } catch (error) {
       console.error('Failed to initiate shutdown:', error);
-      // Try a different method if first one fails
-      try {
-        console.log('Trying alternative shutdown method...');
-        await execAsync('poweroff --force');
-      } catch (innerError) {
-        console.error('All shutdown methods failed:', innerError);
+      
+      // Try alternative shutdown methods
+      const alternatives = [
+        { cmd: 'poweroff', args: ['--force'] },
+        { cmd: 'halt', args: ['-p'] },
+        { cmd: 'systemctl', args: ['poweroff'] },
+        { cmd: 'reboot', args: ['-p'] } // Some systems allow reboot -p for power off
+      ];
+      
+      for (const alt of alternatives) {
+        try {
+          // First check if command exists in common system paths
+          const paths = [
+            `/sbin/${alt.cmd}`,
+            `/usr/sbin/${alt.cmd}`,
+            `/bin/${alt.cmd}`,
+            `/usr/bin/${alt.cmd}`
+          ];
+          
+          let cmdPath = '';
+          for (const path of paths) {
+            if (fs.existsSync(path)) {
+              cmdPath = path;
+              break;
+            }
+          }
+          
+          if (cmdPath) {
+            console.log(`Trying alternative shutdown method: ${cmdPath} ${alt.args.join(' ')}`);
+            await execFileAsync(cmdPath, alt.args);
+            return; // Exit if successful
+          } else {
+            // Try using PATH environment
+            console.log(`Trying alternative via PATH: ${alt.cmd} ${alt.args.join(' ')}`);
+            await execAsync(`${alt.cmd} ${alt.args.join(' ')}`, {
+              env: process.env // Pass the current environment
+            });
+            return; // Exit if successful
+          }
+        } catch (altError) {
+          console.error(`Alternative method ${alt.cmd} failed:`, altError);
+          // Continue to next method
+        }
       }
+      
+      console.error('All shutdown methods failed');
     }
   }
   
@@ -346,10 +425,79 @@ export class NupstDaemon {
           console.log('└──────────────────────────────────────────┘');
           
           try {
-            await execAsync('shutdown -h now "EMERGENCY: UPS battery critically low, shutting down NOW"');
+            // Find shutdown command in common system paths
+            const shutdownPaths = [
+              '/sbin/shutdown',
+              '/usr/sbin/shutdown',
+              '/bin/shutdown',
+              '/usr/bin/shutdown'
+            ];
+            
+            let shutdownCmd = '';
+            for (const path of shutdownPaths) {
+              if (fs.existsSync(path)) {
+                shutdownCmd = path;
+                console.log(`Found shutdown command at: ${shutdownCmd}`);
+                break;
+              }
+            }
+            
+            if (shutdownCmd) {
+              console.log(`Executing emergency shutdown: ${shutdownCmd} -h now`);
+              await execFileAsync(shutdownCmd, ['-h', 'now', 'EMERGENCY: UPS battery critically low, shutting down NOW']);
+            } else {
+              // Try using the PATH to find shutdown
+              console.log('Shutdown command not found in common paths, trying via PATH...');
+              await execAsync('shutdown -h now "EMERGENCY: UPS battery critically low, shutting down NOW"', {
+                env: process.env // Pass the current environment
+              });
+            }
           } catch (error) {
-            console.error('Emergency shutdown failed, trying alternative method...');
-            await execAsync('poweroff --force');
+            console.error('Emergency shutdown failed, trying alternative methods...');
+            
+            // Try alternative shutdown methods in sequence
+            const alternatives = [
+              { cmd: 'poweroff', args: ['--force'] },
+              { cmd: 'halt', args: ['-p'] },
+              { cmd: 'systemctl', args: ['poweroff'] }
+            ];
+            
+            for (const alt of alternatives) {
+              try {
+                // Check common paths
+                const paths = [
+                  `/sbin/${alt.cmd}`,
+                  `/usr/sbin/${alt.cmd}`,
+                  `/bin/${alt.cmd}`,
+                  `/usr/bin/${alt.cmd}`
+                ];
+                
+                let cmdPath = '';
+                for (const path of paths) {
+                  if (fs.existsSync(path)) {
+                    cmdPath = path;
+                    break;
+                  }
+                }
+                
+                if (cmdPath) {
+                  console.log(`Emergency: using ${cmdPath} ${alt.args.join(' ')}`);
+                  await execFileAsync(cmdPath, alt.args);
+                  return; // Exit if successful
+                } else {
+                  // Try using PATH
+                  console.log(`Emergency: trying ${alt.cmd} via PATH`);
+                  await execAsync(`${alt.cmd} ${alt.args.join(' ')}`, {
+                    env: process.env
+                  });
+                  return; // Exit if successful
+                }
+              } catch (altError) {
+                // Continue to next method
+              }
+            }
+            
+            console.error('All emergency shutdown methods failed');
           }
           
           // Stop monitoring after initiating emergency shutdown

ts/nupst.ts

@@ -162,7 +162,7 @@ export class Nupst {
    */
   public logVersionInfo(checkForUpdates: boolean = true): void {
     const version = this.getVersion();
-    console.log('┌─ NUPST Version ────────────────────────┐');
+    console.log('┌─ NUPST Version ────────────────────────────┐');
     console.log(`│ Current Version: ${version}`);
     
     if (this.updateAvailable && this.latestVersion) {

ts/snmp/manager.ts

@@ -1,4 +1,3 @@
-import * as dgram from 'dgram';
 import * as snmp from 'net-snmp';
 import type { IOidSet, ISnmpConfig, TUpsModel, IUpsStatus } from './types.js';
 import { UpsOidSets } from './oid-sets.js';

ts/systemd.ts

@@ -190,20 +190,20 @@ WantedBy=multi-user.target
         timeout: Math.min(config.snmp.timeout, 10000) // Use at most 10 seconds for status check
       };
       
-      console.log('┌─ Connecting to UPS... ────────────────────┐');
+      console.log('┌─ Connecting to UPS... ─────────────────────┐');
       console.log(`│ Host: ${config.snmp.host}:${config.snmp.port}`);
       console.log(`│ UPS Model: ${config.snmp.upsModel || 'cyberpower'}`);
-      console.log('└──────────────────────────────────────────┘');
+      console.log('└────────────────────────────────────────────┘');
       
       const status = await snmp.getUpsStatus(snmpConfig);
       
-      console.log('┌─ UPS Status ───────────────────────────────┐');
+      console.log('┌─ UPS Status ─────────────────────────────┐');
       console.log(`│ Power Status: ${status.powerStatus}`);
       console.log(`│ Battery Capacity: ${status.batteryCapacity}%`);
       console.log(`│ Runtime Remaining: ${status.batteryRuntime} minutes`);
       console.log('└──────────────────────────────────────────┘');
     } catch (error) {
-      console.error('┌─ UPS Status ───────────────────────────────┐');
+      console.error('┌─ UPS Status ─────────────────────────────┐');
       console.error(`│ Failed to retrieve UPS status: ${error.message}`);
       console.error('└──────────────────────────────────────────┘');
     }