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.
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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,…):
Subscribe to the feed for:
Fully recharge your computer battery and start this script.
It will create or clean the file named battery.txt, print a start on it and every minute it will append a time stamp to it.
Batteries last few hours, and each hour will have 60 lines of time stamping. Really good for assuring the system was tested in real life with no surprises.
The last time stamp inside the battery.txt file is of interest. It is the time the computer went off, as the battery was dead!
Turn on your computer after that, on AC power of course, and open battery.txt. Read the first and last time stamps and now you really know if you can trust your computer sensors.
If you want a simple line of text inside the battery.txt file, use this:
watch -n 60 'date > battery.txt'
The time of death will be printed inside
Using -f treats the process name as a pattern so you don't have to include the full path in the command. Thus 'pkill -f firefox' works, even with iceweasel.
shell function which allows you to tag files by creating symbolic links directories in a 'tags' folder.
The tag function takes a tag name as its first argument, then a list of files which take that tag. The directory $HOME/tags/tagname will then hold symbolic links to each of the tagged files. This function was modified from bartonski's (http://www.commandlinefu.com/commands/view/10216) inspired by tmsu (found at https://bitbucket.org/oniony/tmsu/wiki/Home) with readlink function by flxndn (http://www.commandlinefu.com/commands/view/10222).
tag dog airedale.txt .shizturc weimeraner.pl
This will create $HOME/tags/dog which contains symbolic links to airedale.txt .shizturc and weimeraner.pl
Resets a scrambled terminal into its orignal state.
The command `cat file >> file` failes with the following error message:
cat: file: input file is output file
`tee` is a nice workaround without using any temporary files.
In this case, we'll be editing every PHP file from the current location down the tree.
You can show all the files in the vim buffer with :buffers which outputs something like,
1 %a "./config/config.php" line 1
2 "./lib/ws-php-library.php" line 0
3 "./lib/css.php" line 0
4 "./lib/mysqldb.class.php" line 0
5 "./lib/config.class.php" line 0
6 "./lib/actions.php" line 0
Press ENTER or type command to continue
If you'd like to edit ./lib/mysqldb.class.php for example, enter :b4 anytime you're editing a file. You can switch back and forth.
Purges DNS cache of OS X.
dscacheutil -flushcache does not work since OS X 10.7.
This uses spotlight indices to find files that have recently been added. Other options include underscore separated versions of: this week, this month, this
year; today, yesterday.
A grep against ethtool to look for common errors and packet loss statistics which network drivers report in their private data, which is queried with ethool -S. This is the current grep used in xsos (https://github.com/ryran/xsos), which I originally contributed and has been improved by the community over time.
Find which package a file belongs to on Solaris along with it's packaging system metadata.
To highlight the difference between screen updates
It can transfer files through the http, gopher, finger, and ftp protocols without user interaction. It is small and fast.