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// require an internal utility in node for running commands in command line
var exec = require('child_process').exec;
var child;
// get exec from that utily, give the command you want to run as it's first argument
child = exec('npm install ffi',
function (error, stdout, stderr) {
// these are the result, somehow, it's devided to when there's error, or output etc.
console.log('stdout: ' + stdout);
console.log('stderr: ' + stderr);
if (error !== null) {
console.log('exec error: ' + error);
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