Commands by putnamhill (75)

What's this? is the place to record those command-line gems that you return to again and again. 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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purge all packages marked with 'rc'
After you install/remove lots of packages, there are many packages marked with 'rc'. This script help you to purge these packages, it will save some spaces from your disk.

export iPad, iPhone App list to txt file

Job Control
background and disown, but with a proper one-line syntax

Look for English words in /dev/urandom
* to get the English dictionary: wget

a function to create a box of '=' characters around a given string.
First argument: string to put a box around. Second argument: character to use for box (default is '=') Same as command #4948, but shorter, and without the utility function.

Multiple variable assignments from command output in BASH
This version uses read instead of eval.

convert single digit to double digits
Uses 'rename' to pad zeros in front of first existing number in each filename. The "--" is not required, but it will prevent errors on filenames which start with "-". You can change the "2d" to any number you want, equaling the total numeric output: aka, 4d = ????, 8d = ????????, etc. I setup a handful of handy functions to this effect (because I couldn't figure out how to insert a var for the value) in the form of 'padnum?', such as: padnum5 () { /usr/bin/rename 's/\d+/sprintf("%05d",$&)/e' -- [email protected] } Which would change a file "foo-1.txt" to "foo-00001.txt"

Quickly generate an MD5 hash for a text string using OpenSSL
Here Strings / A variant of here documents, the format is:

Mount and umount iso files
Add the functions to the .bashrc to make it work Example: First go to the iso file directory and type: ---------------------------------------------------------------------------------------------------- [email protected]:~$ miso file.iso ---------------------------------------------------------------------------------------------------- It will put you into a temporary mounting point directory (ISO_CD) and will show the files You can umount the iso file whatever the directory you are ---------------------------------------------------------------------------------------------------- [email protected]:~/ISO_CD$ uiso ---------------------------------------------------------------------------------------------------- It wil umount the iso file and remove the temporary directory in your home

Convert control codes to visible Unicode Control Pictures
Converts control codes and spaces (ASCII code ≤ 32) to visible Unicode Control Pictures, U+2400 ? U+2420. Skips \n characters, which is probably a good thing.

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Follow the Tweets.

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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