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promised-exec
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Readme
Promised version of NodeJS child_process exec.
To install this module use following command at root path of your module:
npm install promised-exec --save
This module exports function which waits only one argument on input: string with terminal command.
Function returns promise (based on library "q").
If command is invalid, the catch
function will be called with object which contains string with error, and default error buffer (argument error of exec callback).
If command is valid, but response of command is error, the catch
function will be called with object which contains string with error, and default error buffer (argument error of exec callback).
If command is valid, and response is correct, the the
function will be called with string which contains response of command.
Example (correct command):
var exec, promise;
exec = require('promised-exec');
promise = exec('ls -l');
promise.then(function (responseString) {
/*
* Now variable 'responseString' contains string:
*
* "-rwxrwxrwx 1 root root 29 дек 6 09:58 config.json
* -rwxrwxrwx 1 root root 142 дек 6 09:58 gulpfile.js
* -rwxrwxrwx 1 root root 224 дек 6 09:58 gulptask.test.js
* -rwxrwxrwx 1 root root 796 дек 6 10:34 index.js
* -rwxrwxrwx 1 root root 1093 дек 6 09:58 LICENSE
* drwxrwxrwx 1 root root 0 дек 6 09:59 node_modules
* -rwxrwxrwx 1 root root 713 дек 6 09:58 package.json
* -rwxrwxrwx 1 root root 3051 дек 6 10:51 README.md
* drwxrwxrwx 1 root root 0 дек 6 10:35 tests"
*
*/
});
. . .
Example (incorrect command):
var exec, promise;
exec = require('promised-exec');
promise = exec('some-unknown-command');
promise.catch(function (errorObject) {
/*
* Now variable 'errorObject' contains object:
*
* {"buffer": <Buffer>,"string":"Error: Command failed: /bin/sh: some-unknown-command: command not found\n"}
*
*/
});
. . .
Example (incorrect command arguments):
var exec, promise;
exec = require('promised-exec');
promise = exec('ls -w');
promise.catch(function (errorObject) {
/*
* Now variable 'errorObject' contains object:
*
* {"buffer": <Buffer>,"string":"Error: Command failed: ls: key must be used with argument \"w\"\nUse command \"ls --help\" to get additional information.\n"}
*
*/
});
. . .
FAQs
Promised execution of terminal command.
The npm package promised-exec receives a total of 323 weekly downloads. As such, promised-exec popularity was classified as not popular.
We found that promised-exec demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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