update

ts/smartshell.wrap.ts

@@ -67,6 +67,22 @@ export let execStreaming = (commandStringArg: string) => {
   }
 }
 
+/**
+ * executes a command and returns promise that will be fullfilled once an putput line matches RegexArg
+ * @param commandStringArg
+ * @param regexArg 
+ */
+export let execAndWaitForLine = (commandStringArg: string, regexArg: RegExp) => {
+  let done = plugins.smartq.defer()
+  let execStreamingResult = execStreaming(commandStringArg)
+  execStreamingResult.childProcess.on('data', (stdOutChunk: string) => {
+    if (regexArg.test(stdOutChunk)) {
+      done.resolve()
+    }
+  })
+  return done.promise
+}
+
 /**
  * get a path
  */