Uses 'seq' with formatting parameter to generate the necessary padded sequence. Change '%02.0f' to how many digits you need (for 3, use %03.0f, etc) and replace 5 & 15 with your desired min and max. Show Sample Output

Require "grep -P" ( pcre ). If you don't have grep -P, use that : grep -Eo '"url":"[^"]+' $(ls -t ~/.mozilla/firefox/*/sessionstore.js | sed q) | cut -d'"' -f4

I used to do a lot of path manipulation to set up my development environment (PATH, LD_LIBRARY_PATH, etc), and one part of my environment wasn't always aware of what the rest of the environment needed in the path. Thus resetting the entire PATH variable wasn't an option; modifying it made sense. The original version of the functions used sed, which turned out to be really slow when called many times from my bashrc, and it could take up to 10 seconds to login. Switching to parameter substitution sped things up significantly. The commands here don't clean up the path when they are done (so e.g. the path gets cluttered with colons). But the code is easy to read for a one-liner. The full function looks like this: remove_path() { eval PATHVAL=":\$$1:" PATHVAL=${PATHVAL//:$2:/:} # remove $2 from $PATHVAL PATHVAL=${PATHVAL//::/:} # remove any double colons left over PATHVAL=${PATHVAL#:} # remove colons from the beginning of $PATHVAL PATHVAL=${PATHVAL%:} # remove colons from the end of $PATHVAL export $1="$PATHVAL" } append_path() { remove_path "$1" "$2" eval PATHVAL="\$$1" export $1="${PATHVAL}:$2" } prepend_path() { remove_path "$1" "$2" eval PATHVAL="\$$1" export $1="$2:${PATHVAL}" } I tried using regexes to make this into a cleaner one-liner, but remove_path ended up being cryptic and not working as well: rp() { eval "[[ ::\$$1:: =~ ^:+($2:)?((.*):$2:)?(.*):+$ ]]"; export $1=${BASH_REMATCH[3]}:${BASH_REMATCH[4]}; }; Show Sample Output

Thank You, hackerb9!

Clears the package cache of all uninstalled packages. Does not remove package configuration files in user's home directory.

Helps if you accidentally deleted files from an svn repo with plain rm and you would like to mark them for svn to delete too.

Archive all .sh files in a directory into a gzip archive.

or add this line to your ~/.vimrc if using vim

I can't find the lid command on my system, there is also another complied program: http://xyne.archlinux.ca/projects/lsgrp/

Good for when you download youtube videos and want the mp3 for your mp3 player.

The idea is to get the current branch name directly using git symbolic-ref --short HEAD name and not type it manually. Show Sample Output

I don't know why you would want to echo "blocking ....", but my alternative is functionally equivalent with the extra echo.

For example to add up the disk usage at several disjoint locations. The $[..] is for arithmetic evaluation in bash. Alternatively pipe to the bc command. Show Sample Output

emulates bash4's "echo {03..20}" Uses bash3 builtin function printf Show Sample Output