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shebang-regex

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shebang-regex

Regular expression for matching a shebang line

    4.0.0latest
    GitHub
    npm

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Package description

What is shebang-regex?

The shebang-regex npm package is a simple utility that provides a regular expression for matching shebang lines in files. A shebang line is the first line in a script file that is used to indicate the script interpreter to be used to execute the file. It is commonly found at the top of script files in Unix-based systems and starts with '#!'. This package helps in identifying and extracting the shebang line from files.

What are shebang-regex's main functionalities?

Shebang line matching

The shebang-regex package exports a regular expression that matches the shebang line. Here's an example of how to use it in code to test if a string contains a shebang line: `const shebangRegex = require('shebang-regex'); console.log(shebangRegex.test('#!/usr/bin/env node')); // true`

/^#!.+/

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Source

shebang-regex

Regular expression for matching a shebang line

Install

$ npm install shebang-regex

Usage

import shebangRegex from 'shebang-regex';

const string = '#!/usr/bin/env node\nconsole.log("unicorns");';

shebangRegex.test(string);
//=> true

shebangRegex.exec(string)[0];
//=> '#!/usr/bin/env node'

shebangRegex.exec(string)[1];
//=> '/usr/bin/env node'

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Last updated on 13 Aug 2021

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