commandlinefu.com is the place to record those command-line gems that you return to again and again.
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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.
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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:
I've been using it in a script to build from scratch proxy servers.
'ac' is included in the package 'acct', which is described as "The GNU Accounting utilities for process and login accounting". Other interesting flags are:
* print statistics for a specified user
ac -d username
* print statistics for all the users
With my command, the output is also printed in a sexagesimal, more readable, style.
Validate a file using xmllint. If there are parser errors, edit the file in vim at the line of the first error.
No need for grep, let awk do the match. This will not behave properly if the filenames contains whitespace, which is awk's default field separator.
This should do the same thing and is about 70 chars shorter.
Emits the device names which will be printed by iostat for an LVM volume; doesn't show the names for the underlying devices when snapshots are being used (the -cow and -real devices in /dev/mapper)
Here's an awk version.
Counts TCP states from Netstat and displays in an ordered list.
Searches for web radio by submitted keyword and returns the station name and the link for listing .
May be enhanced to read user's selection and submit it to mplayer.
If you use HISTTIMEFORMAT environment e.g. timestamping typed commands, $(echo "1 2 $HISTTIMEFORMAT" | wc -w)
gives the number of columns that containing non-command parts per lines.
It should universify this command.
not the best, uses 4 pipes!
previous version leaves lots of blank lines
Case Insensitive! and Works even if the "<title>...</title>" spans over multiple line.
Grab a list of MP3s (with full path) out of Firefox's cache
Ever gone to a site that has an MP3 embedded into a pesky flash player, but no download link? Well, this one-liner will yank the *full path* of those tunes straight out of FF's cache in a clean list.
Shorter and Intuitive version of the command submitted by (TuxOtaku)
Interfaces like lo can be omitted from the beginning, there are probably better ways of doing this, i'm a noob at awk.
Ever gone to a site that has an MP3 embedded into a pesky flash player, but no download link? Well, this one-liner will yank the names of those tunes straight out of FF's cache in a nice, easy to read list. What you do with them after that is *ahem* no concern of mine. ;)
Yet another x11grab using ffmpeg. I also added mic input to the capturing video stream using alsa. Yet I need to find out how to capture audio which is currently playing.
This makes an alias for a command named 'busy'. The 'busy' command opens a random file in /usr/include to a random line with vim. Drop this in your .bash_aliases and make sure that file is initialized in your .bashrc.
Computes a columns average in a file. Input parameters = column number and optional pattern.
This version prints current votes and commands for a user. Pass the user as an argument. While this technically "fits" as a one liner, it really is easier to look at as a shell script with extra whitespace. :)