Recursive Find from Command Line

By  on  

Probably a dozen times a day I need to search any given project for specific code keywords.  Most of the time it's within a specific project but then there are times where I don't remember which directory or project the specific text is -- from my blog to my many Mozilla projects, I have code all over my local machine and it's oftentimes difficult to find something I need.

Most of the time I need to open my text editor and have it do the hard work of what I'm looking for but that's probably not efficient -- a more efficient tool would come from command line and thanks to CommandLineFu.com, I found the perfect command:

# Search all ".js" files for "debounce"
# Spits out file path, line number, and snippet where string appears
find . -name "*.js" -exec grep -in -H "debounce" {} \;

The command above searches files recursively to find the desired string, outputting the source file and the text which the string occurs in!

Recent Features

  • By
    7 Essential JavaScript Functions

    I remember the early days of JavaScript where you needed a simple function for just about everything because the browser vendors implemented features differently, and not just edge features, basic features, like addEventListener and attachEvent.  Times have changed but there are still a few functions each developer should...

  • By
    Create Namespaced Classes with MooTools

    MooTools has always gotten a bit of grief for not inherently using and standardizing namespaced-based JavaScript classes like the Dojo Toolkit does.  Many developers create their classes as globals which is generally frowned up.  I mostly disagree with that stance, but each to their own.  In any event...

Incredible Demos

  • By
    CSS Kwicks

    One of the effects that made me excited about client side and JavaScript was the Kwicks effect.  Take a list of items and react to them accordingly when hovered.  Simple, sweet.  The effect was originally created with JavaScript but come five years later, our...

  • By
    Add Site Screenshots for External Links Using MooTools Tooltips

    Before you send your user to an unknown external website, why not provide them a screenshot of the site via a tooltip so they may preview the upcoming page? Here's how you can do just that using MooTools. The MooTools JavaScript The first step is to grab...

Discussion

  1. Vladimir

    Recently I’m using:

    grep 'term' -r ./

    I think grep also has an option to filter on file extension too and I use it sometimes, but I don’t know it by heart.

  2. The output on this looks pretty must the same as with the functionality already built into grep using the -r and --include flags. I also tend to add the -n flag to output the line numbers as well. I believe this should line be equivalent.

    grep -rin --include="*.js" "debounce" .
  3. The find trick was one I learned at university in the 1990s, when most greps didn’t have the recursive flag. My vague recollection is that GNU grep introducing -r gave much of the competition a bit of a kick up the arse, and now it’s fairly common, but the find trick is still useful on older or more obscure Unix platforms…

  4. Jeremy

    Pretty sure you have a typo in there. “*.[js]” means “*.j” or “*.s”, which is likely to find nothing.

    • Good point — left some testing in there. Updated!

  5. Check out Ack (http://beyondgrep.com/why-ack/).

    ack debounce
    • Oh, you were filtering for JavaScript files only. That’s as easy as

      ack debounce --type=js

      :-)

  6. Isaiah

    Wasn’t able to execute this through the command line: Err find: missing argument to `-exec'

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!