Run multiple shell commands synchronously in NodeJs
I came across this issue recently, and after some failed Googling realized that nobody had really solved this very well.
Sure, there’s exec-sync(which doesn’t work with node .10 and is no longer maintained) and execSync(which is dangerous and should not be run outside a development environment) but even both of those feel pretty hacky. So I thought there must be a better way.
Here it is, using only async and child_process.
var async = require(‘async’);
var exec = require(‘child_process’).exec;
function execSync() {
async.series([
execFn(‘git reset –hard HEAD’, ‘/optional/working/dir’),
execFn(‘git pull origin master’, ‘/optional/working/dir’)
]);
}
var execFn = function(cmd, dir) {
return function(cb) {
console.log(‘EXECUTING: ‘ + cmd);
exec(cmd, { cwd: dir }, function() { cb(); });
}
}
Filed under: Coding | 5 Comments
Ryan O’Neill
Software // Data // Stuff
The Geek Index 
How do I get the return string of the shell command that got executed?
I know you commented a while ago, but you should be able to get the stdout by changing the var execFn to
var execFn = function (cmd, dir) {
return function (cb) {
console.log(‘EXECUTING: ‘ + cmd);
exec(cmd, {
cwd: dir
}, function (error, stdout, stderr) {
console.log(stdout);
console.log(error);
console.log(stderr);
cb();
});
}
}
for me doesn t work 😦
good thinking but this script might return nothing
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