diff --git a/package.json b/package.json
index 9971ab1..6f5d74d 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,7 @@
   },
   "scripts": {
     "test": "tsrun test/test.ts",
+    "testCustom": "node cli.ts.js custom ts_web",
     "build": "node cli.ts.js"
   },
   "repository": {
diff --git a/ts/tsbuild.cli.ts b/ts/tsbuild.cli.ts
index db79a74..9c53342 100644
--- a/ts/tsbuild.cli.ts
+++ b/ts/tsbuild.cli.ts
@@ -3,6 +3,9 @@ import * as tsbuild from './tsbuild.exports';
 
 const tsbuildCli = new plugins.smartcli.Smartcli();
 
+/**
+ * the standard task compiles anything in ts/ directory to dist directory
+ */
 tsbuildCli.standardTask().subscribe(argvArg => {
   if (process.env.CLI_CALL_TSBUILD === 'true') {
     tsbuild.compileGlobStringObject(
@@ -16,4 +19,22 @@ tsbuildCli.standardTask().subscribe(argvArg => {
   }
 });
 
+/**
+ * the custom command compiles any customDir to dist_customDir
+ */
+tsbuildCli.addCommand('custom').subscribe(argvArg => {
+  const listedDirectories = argvArg._;
+  listedDirectories.shift();
+  const compilationCommandObject: {[key: string]: string} = {};
+  for (const directory of listedDirectories) {
+    compilationCommandObject['./' + directory] = './dist_' + directory;
+  };
+  tsbuild.compileGlobStringObject(
+    compilationCommandObject,
+    {},
+    process.cwd(),
+    argvArg
+  );
+})
+
 tsbuildCli.startParse();