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.
» http://twitter.com/commandlinefu
» http://twitter.com/commandlinefu3
» http://twitter.com/commandlinefu10
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:
convert is included in ImageMagick. Don't forget the [X] (where X is the page number). [0] is the first page of the PDF.
The date command does offset calculations nicely, handles concepts like "a month" as you'd expect, and is good for offsets of at least 100M years in either direction.
This command opens the latest, most current rotating apache access log for visual analysis and inspection. Run this command from the apache log directory. For error logs, replace access_log with error_log.
apt-show-versions is a program that shows what packages in the system may be updated and several useful information. The -u option displays a list of upgradeable packages:
From: http://www.debian.org/doc/manuals/apt-howto/ch-helpers.en.html
This will copy the first 1MB of your /dev/sdX volume to your /root/sdX.bin file, where SDX is the name of the device you wish to copy the data from (Usually a hard disk)
NOTE: Make sure you capitalize the M in field for BS.
Use this to make a new commit that "softly" reverts a branch to some commit (i.e. squashes the history into an inverse patch). You can review the changes first by doing the diff alone.
Use this to start git daemon serving all git repos under a path.
A useful way to do a full check and auto repair damaged databases
Bash shortcut to work with the last argument of your last command
Quick command to check if Perl library is installed on your server.
E.g. Useful for hiding spoilers in reviews, etc.
joins multiple lines to create single line with comma separated values. for example if we have an email addresses one per line (copy&paste from spreadsheet) it will oputput one line with comman separated addresses to put it to email client.
From a saved page of google search results, split out all of the links for the results. Useful for creating apache rewrite rules from.