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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

Change the extension of a filename by using rename to convert

Terminal - Change the extension of a filename by using rename to convert
rename .JPG .jpg *.JPG
2009-03-10 15:07:24
User: psytek
Functions: rename
Change the extension of a filename by using rename to convert

This will change all files ending in .JPG to .jpg and will work with any file extension


There is 1 alternative - vote for the best!

Terminal - Alternatives

Know a better way?

If you can do better, submit your command here.

What others think

It seems, after poking around under ubuntu, if you have perl installed, invoking 'rename' will actually invoke a perl script intended to improve on the behavior of the 'normal' rename utility provided by util-linux-ng, and typing the command as listed above will result in a weird error. To invoke the non-perl version (I've only checked under ubuntu), try

rename.ul .JPG .jpg *.JPG

To more permanently restore the non-perl rename, edit the symbolic link /etc/alternatives/rename to point to /usr/bin/rename.ul

Comment by bwoodacre 432 weeks and 4 days ago

to rename *.JPG or JpG or jPg and so... to *.jpg

rename 'y/A-Z/a-z/' *.[jJ][pP][gG]
Comment by oops66 431 weeks and 6 days ago

@ bwoodacre

'which rename' will tell you the location, so you can call it like this:

/usr/bin/rename .JPG .jpg *.JPG

That's why you should use full paths if you want to make the scripts portable.

Comment by karol 345 weeks ago

Your point of view

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