how to wait for an exec command to fininsh in nodejs

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17 Jul 2016

1const exec = require('child_process').exec;
2
3function os_func() {
4    this.execCommand = function(cmd, callback) {
5        exec(cmd, (error, stdout, stderr) => {
6            if (error) {
7                console.error(`exec error: ${error}`);
8                return;
9            }
10
11            callback(stdout);
12        });
13    }
14}
15var os = new os_func();
16
17os.execCommand('SomeCommand', function (returnvalue) {
18    // Here you can get the return value
19});

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