NodeJS- get process ID from within shell script exec

Question

I have some NodeJS code which runs a shell script using child_process.exec(). Within this shell script I run a program someProgram. What I would like to do is get the PID of someProgram and pass that back into my Javascript code so I can later kill that specific process with another child_process.exec() call. Is this possible?

Answer 1

var exec = require('child_process').exec;
var pid = {};
exec('. ./script.sh', function(err, stdout, stderr) {
  console.log(stdout);
  setTimeout(function() {
    exec('kill ' + pid, function(err, stdout, stderr) {
      console.log(stdout);
    });
  }, 6000);

});

exec('pgrep -f someProgram', function(err, stdout, stderr) {
  console.log('stdout' + stdout);
  pid = stdout;
  console.log('pid ' + pid);
});

just note that the bottom exec would run concurrently. You could use this in a gulpfile, etc.