Executing Shell Scripts in Node.js
In this short article, we will learn how to execute shell scripts using Node.js.
Execute Shell Scripts in Node.js using the shelljs module
ShellJS is a portable implementation of Unix shell commands on top of the Node.js API. We can use it to remove the shell script's dependency on Unix while keeping the commands familiar and powerful.
We can also install it globally to run it from an external node task. We can discover more about shelljs in the ShellJS documentation.
grammar:
exec(command [, options] [, callback])
Following are the different options of Node.js child_process.exec().
- async : async means asynchronous execution. Regardless of the value passed, if a callback is provided, it will be set to true . The default value is false.
- silent : Do not write program output to the console. Default value is false.
- encoding : The character encoding to use. It affects the values returned to stdout and stderr and what is written to stdout and stderr in non-silent mode. The default value is utf8.
We will focus on how to execute shell scripts in Node.js using the shelljs module.
First, install the shelljs library using the following command.
$ npm i shelljs
The following command will check the version of npm.
const shell = require('shelljs')
shell.exec("npm --version")
In addition to the command, we can also specify the path to the shell file.
The output is as follows:
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