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.
If you have a new feature suggestion or find a bug, please get in touch via http://commandlinefu.uservoice.com/
You can sign-in using OpenID credentials, or register a traditional username and password.
First-time OpenID users will be automatically assigned a username which can be changed after signing in.
Every new command is wrapped in a tweet and posted to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning, there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.
Use your favourite RSS aggregator to stay in touch with the latest commands. There are feeds mirroring the 3 Twitter streams as well as for virtually every other subset (users, tags, functions,…):
Subscribe to the feed for:
This assumes that te original's 'passwd -e' forces a user to change password; it doesn't in the versions I have.
This script will list all the files in the tarballs present on any folder or subfolder of the provided path. The while loop is for echoing the file name of the tarball before listing the files, so the tarball can be identified
handles file names with spaces and colons, fixes sort (numeric!), uses mplayer, same output format as other alternatives
I hate -exec with find, and this pattern quickly expands to other tasks.
Halt script progress until a key has been pressed.
You'll run into trouble if you have files w/ missing newlines at the end. I tried to use
PAGER='sed \$q' git blame
PAGER='sed \$q' git -p blame
to force a newline at the end, but as soon as the output is redirected, git seems to ignore the pager.
uses the previous "chr" function and uses it to create the inverse function "ord" by brute force.
It's slow, It's inelegant, but it works.
I thought I needed ord/chr to do a cartesian cipher in shell script a whie ago, but eventualy I realized I could get fancy with tr and do the same thing...
Calculates the size on disk for each package installed on the filesystem (or removed but not purged). This is missing the
| sort -rn
which would put the biggest packges on top. That was purposely left out as the command is slightly on the slow side
Also you may need to run this as root as some files can only be checked by du if you can read them ;)
After this, just type:
You need to install "beep" before this would make the beep sound.
Save it in your .profile if you want to use it later
WARNING: this command won't exit until it is successful. You won't be able to CONTROL+C out of it.
I find the ouput of ls -lR to be un-satisfying (why is the path data up there?) and find syntax to be awkward. Running 'du -a' means you will have likely to trim-off filesize data before feeding filenames to the next step in the pipe.
This command dumps all SVN repositories inside of folder "repMainPath" (not recursively) to the folder "dumpPath", where one dump file will be created for each SVN repository.
Same thing, only "head" instead of grep/egrep..
search argument in PATH
accept grep expressions
without args, list all binaries found in PATH
Rainbow, instead of greys
Based on the MrMerry one, just add some visuals to differentiate files and directories
Based on the MrMerry one, just add some visuals and sort directory and files
The important thing to note in this command, is the "-n" flag.
Compile *.c files with "gcc -Wall" in actual directory, using as output file the file name without extension.
This command changes all filename and directories within a directory tree to unaccented ones. I had to do this to 'sanitize' some samba-exported trees. The reason it works might seem a little difficult to see at first - it first reverses-sort by pathname length, then it renames only the basename of the path. This way it'll always go in the right order to rename everything.
1. You'll have to have the 'unaccent' command. On Ubuntu, just aptitude install unaccent.
2. In this case, the encoding of the tree was UTF-8 - but you might be using another one, just adjust the command to your encoding.
3. The program might spit a few harmless errors saying the files are the same - not to fear.
Sqlite database keeps collecting cruft as time passes, which can be cleaned by the 'vacuum;' command. This command cleans up the cruft in all sqlite files relating to the user you have logged in as. This command has to be run when firefox is not running, or it will exit displaying the pid of the firefox running.
Renames all the jpg files as their timestamps with ".jpg" extension.