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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.
March 2, 2015 - New Management
I'm Jon, I'll be maintaining and improving clfu. Thanks to David for building such a great resource!

Top Tags



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 using find from sorted by
Terminal - Commands using find - 1,074 results
find | sed -e "s/^.*\///" | awk ' BEGIN { FS=""} { print NF " " $0 } ' | sort -nrf | head -10
find -writable
2009-04-11 22:16:35
User: kFiddle
Functions: find

Have a grudge against someone on your network? Do a "find -writable" in their directory and see what you can vandalize! But seriously, this is really useful to check the files in your own home directory to make sure they can't inadvertently be changed by someone else's wayward script.

find ~ -mtime +365 -exec mv {} /tmp/mybackup \;
2009-04-11 12:16:48
User: kayowas
Functions: find mv

This example uses the -exec option to move all matching files into a backup directory

for i in $( find . ); do echo zipping file: $i zip $i.zip $i done
2009-04-07 20:37:49
User: archlich
Functions: echo find

Note that this will not work with files with spaces or characters that need to be escaped. Feel free to leave any comments to improve upon this command, and I'll add it in.


for file in $(find -type f -iname "*wav"); do mv $file "$file"_orig.WAV; mplayer -ao pcm "$file"_orig.WAV -ao pcm:file=$file; done
find . \( -type d -name .svn -prune \) -o -print | while read file ; do mergeinfo=`svn propget svn:mergeinfo $file` ; [ "$mergeinfo" != "" ] && echo -e "$file\n $mergeinfo\n" ; done
find . -type f -size +25000k -exec ls -lh {} \; | awk '{ print $8 ": " $5 }'
find ./ -not -type d | xargs wc -l | cut -c 1-8 | awk '{total += $1} END {print total}'
find . -name "*.py" -exec grep -n -H -E "^(import|from) math" {} \;
find . -type f -exec grep StringToFind \{\} --with-filename \;|sed -e '/svn/d'|sed -e '/~/d'
2009-03-31 18:09:31
User: f241vc15
Functions: find grep sed

Look for a string in one of your codes, excluding the files with svn and ~ (temp/back up files). This can be useful when you're looking for a particular string in one of your source codes for example, inside a directory which is under version control (e.g. svn), removing all the annoying files with ~ (tilde) from the search. you can even change the command after -exec to delete (rm) or view (cat) files found by 'find' for example

find ~/.thumbnails/ -type f -atime +30 -print0 | xargs -0 rm
2009-03-30 04:23:07
User: alperyilmaz
Functions: find xargs

By time thumbnail images in ~/thumbnails take up too much space, this command will help deleting old ones.

Find options explained:

-type f : find files only, not directories

-atime +30 : last accessed more than 30 days ago

find /home/user/doc/ -type d -printf "mkdir -vp '/home/user/Dropbox%p'\n" -o -type f -printf "ln -vs '%p' '/home/user/Dropbox%p'\n" | sh
2009-03-29 09:25:12
User: jnash
Functions: find

Extremely useful to maintain backups if you're using Dropbox. This mirrors the entire directory structure and places symlinks in each to the original file. Instead of copying over the data again to the ~/Dropbox folder creating a symbolic link tree is much more sensible in terms of space usage.

This has to be supplemented by another script that removes dead symlinks in the Dropbox folder which point to files that have been moved/removed.

find -L ./ -type l -delete

And then removing empty directories

find ./ -type d -exec rmdir 2>/dev/null {} \;

**Actually after some finding I found lndir which creates symbolic trees but it wasn't in the Arch repos so.. ;)

find ./ -name '*.JPG' -type f -execdir rename -f 'y/A-Z/a-z/' {} \+
2009-03-27 13:49:56
User: pronoiaque
Functions: find rename

Change files case, without modify directories, recursively.

... fucking vfat

find ./ -iname "*.mp3" -type f -printf "mv '%p' '%p'\n" | sed -e "s/mp3'$/mp3'/I" | sh
2009-03-27 13:42:40
User: jnash
Functions: find sed

Extensible to other ugly extensions like *.JPG, *.Jpg etc..

Leave out the last pipe to sh to perform a dry run.

find . -name 'junkfiles-*' -print0 | xargs -0 rm
2009-03-26 15:38:42
User: kancer
Functions: find xargs
Tags: find xargs print rm

Can be used for other commands as well, replace rm with ls.

It is easy to make this shorter but if the filenames involved have spaces, you will need to do use find's "-print0" option in conjunction with xargs's "-0" option. Otherwise the shell that xargs uses to execute the "rm" command line will treat the space as a token separator, thereby treating the name as two (or more) names.

find . -type f -depth -3 -mtime -5
2009-03-25 19:54:06
User: totoro
Functions: find

Ever wanted to find the most recently modified files, but couldn't remember exactly where they were in a project directory with many subdirectories? The "find" command, using a combination of "-mtime -N" and "-depth -D" can be used to find those files. If your directory structure isn't very deep, just omit the "-depth -D", but if your directory structure is very deep, then you can limit the depth of the traversal using "-depth -D", where "D" is the maximum number of directory levels to descend.

find /proc -regex '/proc/[0-9]+/smaps' -exec grep -l "$PATH_REGEX" {} \; | cut -d'/' -f2
2009-03-25 16:33:44
User: juddmaltin
Functions: cut find grep

faster than lsof by at least x2 on my box.

find . -wholename './.snapshot' -prune -o -print
2009-03-25 13:52:01
User: jeffaz
Functions: find

This can be useful for those who have mounted NetApp file-systems with snapshot activated.

find -depth . | (while read FULLPATH; do BASENAME=`basename "${FULLPATH}"`; DIRNAME=`dirname "${FULLPATH}"`; mv "${DIRNAME}/${BASENAME}" "${DIRNAME}/${BASENAME// /_}"; done)
2009-03-24 21:04:32
User: mohan43u
Functions: find mv read

Takes filenames and directory names and replace space to '_'.

date -d "@$(find dir -type f -printf '%C@\n' | sort -n | sed -n "$(($(find dir -type f | wc -l)/2))p")" +%F
2009-03-24 18:48:49
User: allengarvin
Functions: date dir find wc

I needed to get a feel for how "old" different websites were, based on their directories.

find . -regex "[^.]*" -depth -empty -type d -mtime +1 -exec rmdir -v {} \;
find / -nouser -o -nogroup -print
find -iname '*.flac' | sed 's:/[^/]*$::' | uniq
2009-03-24 13:26:31
User: ar
Functions: find sed

Run this in your music folder, or give the path directly after "find".

The sed pattern filters away the basename.

find ./ -mtime -5 | xargs rm -f
find . -name *.php | xargs grep -i -n 'TERM'