Synchronous exec with status code support. Requires no external dependencies, no need for node-gyp compilations etc.

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0.6.29 years ago10 years agoMinified + gzip package size for sync-exec in KB


An fs.execSync replacement until you get it natively from node 0.12+
Upgrading to 0.12.x is usually safe. At that point it will use childprocess.execSync.
You can still force the emulated version passing {forceEmulated: true} to the options argument.
Inspired by exec-sync
but comes with a few advantages:
  • no libc requirement (no node-gyp compilation)
  • no external dependencies
  • returns the exit status code
  • you can pass execSync options
  • multiple commands should work pretty safely
[sudo] npm install sync-exec
exec(cmd[, timeout][, options]);
var exec = require('sync-exec');

// { stdout: '1\n',
//   stderr: '',
//   status: 0 }
console.log(exec('echo 1'));

// You can even pass options, just like for [child_process.exec](
console.log(exec('ls -la', {cwd: '/etc'}));

// Times out after 1 second, throws an error
exec('sleep 3; echo 1', 1000);
How it works (if you care)
Your commands STDOUT and STDERR outputs will be channeled to files, also the exit code will be saved. Synchronous file readers will start listening to these files right after. Once outputting is done, values get picked up, tmp files get deleted and values are returned to your code.