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

Delete that bloated snippets file you've been using and share your personal repository with the world. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.


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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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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

diff the outputs of two programs

Terminal - diff the outputs of two programs
diff <(exiftool img_1.jpg) <(exiftool img_2.jpg)
2012-01-30 22:01:17
User: fpunktk
Functions: diff
8
diff the outputs of two programs

I've been looking for this for a long time. Does anybody know how to do this in dash (POSIX shell)?

An alternative version might be:

exiftool img_1.jpg | diff - <(exiftool img_2.jpg)

Alternatives

There is 1 alternative - vote for the best!

Terminal - Alternatives
diff <(lsusb) <(sleep 3s && lsusb)
2010-12-27 22:46:54
User: Juluan
Functions: diff sleep
25

I often use it to find recently added ou removed device, or using find in /dev, or anything similar.

Just run the command, plug the device, and wait to see him and only him

Know a better way?

If you can do better, submit your command here.

What others think

A big thank you for that.

Comment by jmfork 239 weeks and 1 day ago

Your point of view

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