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:
Especially useful with a command line podcatcher like Mashpodder.
Move efficiently between directories.
This command adds a couple of extra features to cd, without affecting normal use.
CDPATH use is also unaffected. It introduces and environment variable CDDIR which is used as an alternate home directory.
Note: I don't want to alter $HOME because then all my dot files will move.
Change directory to "dir" (using CDPATH if necessary)
Change directory to "dir" (containing folder of "file.txt")
This allows you to cut'n'paste, or use
CDDIR is unset
Change directory to $HOME
Change directory to /home/flatcap/work
For convenience, put the command, and the following, in your .bashrc or .bash_profile
find broken symbolic links
Use Curl to upload documents from your linux servers to MS Sharepoint servers.
the -h option of du and sort (on appropriate distrib) makes output "Human" readable and still sorted by "reversed size" (sort -rh)
Execute commands serially on a list of hosts. Each ssh connection is made in the background so that if, after five seconds, it hasn't closed, it will be killed and the script will go on to the next system.
Maybe there's an easier way to set a timeout in the ssh options...
The other commands were good, but they included packages that were installed and then removed.
This command only shows packages that are currently installed, sorts smallest to largest, and formats the sizes to be human readable.
Prints line numbers making it easier to see long lines that wrap in your terminal and extra line breaks at the end of a file.
May require GNU find.
Using a GUI file managers you can merge directories (cut and paste). This command roughly does the same (it doesn't ask for confirmation (no problem for me) and it doesn't clean up the empty SRC directories (no problem, trivial).
probably does the same:
cp -l SRC TARGET; rm -rf SRC
cat without comments
When working with jailed environments you need to copy all the shared libraries to your jail environment. This is done by running ldd on a binary which needs to run inside the jail. This command will use the output from ldd to automatically copy the shared libraries to a folder of your choice.
Change your Desktop background/wallpaper with feh lightweight command.
fill background directory with appropriate content.
Well, this is quite useful for testing if your hardware watchdog is working properly.
Output should be two JPG files named like "output-1.jpg" and "output-2.jpg". The convert command is part of ImageMagick so you'll need that and dependent packages installed to use it.
This is especially useful for adding changes to a temporary repo, such as a Gist. Avoid using this when collaborating with others.