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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,…):
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Greps located files for an expression.
Example greps all LaTeX files for 'foo':
locate *.tex | xargs grep foo
To avoid searching thousands of files with grep it could be usefull to test first how much files are returned by locate:
locate -c *.tex
When you fill a formular with Firefox, you see things you entered in previous formulars with same field names. This command list everything Firefox has registered. Using a "delete from", you can remove anoying Google queries, for example ;-)
This is useful for remove all packages that are part of a common suite.
This is a simple command, but extremely useful. It's a quick way to search the file names in the current directory for a substring. Normally people use "ls *term*" but that requires the stars and is not case insensitive. Color (for both ls and grep) is an added bonus.
Lists the local files that are not present in the remote repository (lines beginning with ?)
and add them.
Declare this function in your Shell, then use it like this:
> jumpTo foo
The script will search for the 'foo' pattern in your current xmms2 playlist (artist or songname), and play the first occurence of it !
Get the svn info, grep for the "URL" of the repository, pull out the tag/branch/trunk, and then just show the helpful/meaningful bit.
Linux : these script enable you to edit multiple files and remove exact phrase from multiple files
Replace "en1" with your network interface (on OS X, usually en0, en1, eth0, etc..)
get cpu info from dmesg
After seeing the command you wish to repeat, just invoke it using the ! syntax.
Shows all linked file and destinations. The 'ls -l' command lists the files in long (1 file per line) format, and the grep command displays only those lines that starts with an l (lower case L) -- a linked file.
Updated: Remove reference to hard links because this command does not apply to hard link as others kindly pointed out.
Reads a username from
You can use this to loop any command to periodically see the output.
while true; do [YOUR COMMAND HERE]; sleep [# of seconds]; done;
Alternatively, you can put it in a simple shell script to save typing!
while true; do $1; sleep $2; done;
/path/to/script.sh "ifconfig eth0 | grep 'inet addr:'" 60
I used this to confirm an upgrade to an SSH daemon was successful
Sys Temp: +11.0?C
CPU Temp: +35.5?C
AUX Temp: +3.0?C
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
Searches /var/log/secure for smtp connections then lists these by number of connections made and hosts.