promise-exec

A simple wrap for child_process.exec which returns promise

Installation

``bash
$ npm install promise-exec
`

API

$3

It's a promise version of child_process.exec.

`javascript
var exec = require('promise-exec');

exec('ls -al')
.then(function(result) {
console.log(result);
})
.catch(function(err) {
console.error(err);
});
`

$3

It's a sugar for subsequent thenable calls that makes code simpler and more elegant.

`javascript
var exec = require('promise-exec').wrap;

Promise.resolve()
.then(exec('git add .'))
.then(exec('git commit -m "fix xxx"'))
.then(exec('git push origin master'))
.catch(function(err) {
console.error(err);
});
`

$3

Promise version of executing a shell script file, just like sh test.sh.

test.sh:

`bash
touch index.txt
echo "hello" > index.txt


comments will be ingored


cat index.txt
`

index.js:

`javascript
var fs = require('fs');
var path = require('path');
var execFile = require('promise-exec').execFile;
var file = path.join(__dirname, './test.sh');

execFile(file)
.then(function() {
var txt = path.join(__dirname, 'index.txt');
console.log(fs.existsSync(txt)); // true

var content = fs.readFileSync(txt, { encoding: 'utf8' });
console.log(content); // hello\n
})
.catch(function(err) {
console.error(err);
});
``