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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.
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

Commands by ClashTheBunny from sorted by
Terminal - Commands by ClashTheBunny - 4 results
for foo in <list of directories>; do while find $foo -type d -empty 2>/dev/null| grep -q "."; do find $foo -type d -empty -print0 | xargs -0 rmdir; done; done
2012-05-23 08:09:16
Functions: find grep xargs

This will check if there are any empty directories, or newly emptied directories, in a list of directories. It will then delete all of those directories. It works with gnu find and OSX/BSD find.

desiredDay=6; year=2012; month=5; n=0; while [ $(date -d "$year-$((month+1))-1 - $n day" "+%u") -ne $desiredDay ]; do n=$((n+1)); done; date -d "$year-$((month+1))-1 - $n day" "+%x"
2012-05-17 12:02:30
Functions: date

Choosing your year and month. You only need the gnu date command and bash. desiredDay of the week is (1..7); 1 is Monday.

If you want desiredDay of week (0..6); 0 is Sunday

desiredDay=6; year=2012; month=5; n=0; while [ $(date -d "$year-$((month+1))-1 - $n day" "+%w") -ne $desiredDay ]; do n=$((n+1)); done; date -d "$year-$((month+1))-1 - $n day" "+%x"
find . -printf "%s %p\n" | sort -n
zeros=3; from=1; to=15; for foo in $(seq $from $to); do echo mv "front${foo}back" "front$(printf "%0${zeros}d\n" $foo)back"; done
2012-05-17 10:54:45
Functions: echo mv seq

This command takes a few changes to get to the file format, but once you have that, you're good to go. Set your environment variables and then change the text "front" and "back" to whatever you're files start and end with. You'll end up with some easily sort-able files.