You need to pass also \n symbol to get your command work: var spawn = require(‘child_process’).spawn, child = spawn(‘phantomjs’); child.stdin.setEncoding(‘utf-8’); child.stdout.pipe(process.stdout); child.stdin.write(“console.log(‘Hello from PhantomJS’)\n”); child.stdin.end(); /// this call seems necessary, at least with plain node.js executable
The option is short for current working directory, and is spelled cwd, not cdw. var exec = require(‘child_process’).exec; exec(‘pwd’, { cwd: ‘/home/user/directory’ }, function(error, stdout, stderr) { // work with result });
If you can use node’s built in child_process.spawn, you’re able to send a SIGINT signal to the child process: var proc = require(‘child_process’).spawn(‘mongod’); proc.kill(‘SIGINT’); An upside to this is that the main process should hang around until all of the child processes have terminated.
By default output to stdout is line-buffered when connected to a terminal. That is, the buffer is flushed when it’s full or when you add a newline. However, if stdout is not connected to a terminal, like what happens when you redirect the output from your program to a file, then stdout becomes fully buffered. … Read more
Just use : pgrep -P $your_process1_pid
You can pass the parent´s stdio to the child process if that´s what you want: require(‘child_process’).execSync( ‘rsync -avAXz –info=progress2 “/src” “/dest”‘, {stdio: ‘inherit’} );
NOTE: This error is almost always caused because the command does not exist, because the working directory does not exist, or from a windows-only bug. I found a particular easy way to get the idea of the root cause of: Error: spawn ENOENT The problem of this error is, there is really little information in … Read more