commandlinefu.com is the place to record those command-line gems that you return to again and again.
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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:
Very usefull script to use when uoy must print all files from a directory.
Strips the audio track from a webm video. Use this in combination with clive or youtube-dl.
works for Powershot SD780 IS
https://xkcd.com/936/ introduced us to what actually is a good password. Here's such an implementation.
Credit: quinq on #suckless
This will show where your Perl installation is looking for modules.
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.