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ngrep - asynchronous grep

Copyright (C) 2011 by Maciej Małecki

MIT License (see LICENSE file)

ngrep does what grep does, but asynchronously. It was inspired by @AvianFlu's ncp, which you should be already using.


As an executable

It's on npm! npm install -g ngrep.

In some cases (e.g. if your node installation is system-wide), you will need to sudo npm install -g ngrep.

As a library

ngrep is so cool that you can use it in your application! In this case just add it as a dependency or npm install ngrep in your app's directory.


As an executable

To grep directory dir for string foo: ngrep foo dir (it couldn't get any simpler than that).

It can also grep files, but this is just slower than regular grep: ngrep foo file.

As a library

To grep directory dir for RegExp /foo/g:

var ngrep = require('ngrep');
ngrep(/foo/g, 'dir', function (result) {
  console.log(result.file + ': ' + console.context);
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