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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.
March 2, 2015 - New Management
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:

  • » The open beta is running a copy of the database that will not carry over to the final version. Don't post anything you don't mind losing.
  • » If you wish to use your user account, you will probably need to reset your password.
Your feedback is appreciated via the form on the beta page. Thanks! -Jon & CLFU Team

Create a quick back-up copy of a file

Terminal - Create a quick back-up copy of a file
cp file.txt{,.bak}
2009-01-26 12:11:29
User: root
Functions: cp
Create a quick back-up copy of a file

Uses shell expansion to create a back-up called file.txt.bak


There is 1 alternative - vote for the best!

Terminal - Alternatives
cp foo{,bak}
2014-01-22 14:09:42
Functions: cp
Tags: cp

Utilizes shell expansion of {} to give the original filename and a new filename as arguments to `cp`. Can easily be extended to make multiple copies.

Know a better way?

If you can do better, submit your command here.

What others think

Works well in a bash 'for' loop to create a backup of multiple files:

for file in *.txt; do cp $file{,.bak}; done;
Comment by chrisdrew 403 weeks and 3 days ago

Your point of view

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