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commandlinefu.com is the place to record those command-line gems that you return to again and again.

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May 19, 2015 - A Look At The New Commandlinefu
I've put together a short writeup on what kind of newness you can expect from the next iteration of clfu. Check it out here.
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I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!
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Psst. Open beta.

Wow, didn't really expect you to read this far down. The latest iteration of the site is in open beta. It's a gentle open beta-- not in prime-time just yet. It's being hosted over at UpGuard (link) and you are more than welcome to give it a shot. Couple things:

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Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

underscore to camelcase

Terminal - underscore to camelcase
echo "this_is_a_test" | sed -r 's/_([a-z])/\U\1/g'
2014-04-03 14:21:37
User: senorpedro
Functions: echo sed
2
underscore to camelcase

Alternatives

There are 4 alternatives - vote for the best!

Terminal - Alternatives
echo thisIsATest | sed -E 's/([A-Z])/_\L\1/g'
2014-05-07 14:16:58
User: Damiii
Functions: echo sed
Tags: sed
4

For mac users !

echo thisIsATest | sed -r 's/([A-Z])/_\L\1/g'
2014-04-11 13:36:08
User: flatcap
Functions: echo sed
Tags: sed
1

Convert a camelCase string into snake_case.

To complement senorpedro's command.

Know a better way?

If you can do better, submit your command here.

What others think

Mac OSX has an older version of sed so some expressions don't work as well... install gnu-sed using brew.

brew install gnu-sed
Comment by mogga 95 weeks and 4 days ago

Your point of view

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