up.bashrc.sh

alias ..='up'
# <http://orangesplotch.com/bash-going-up/>
# Go up directory tree X number of directories
function up() {
	COUNTER="$@";
	END_OLDPWD="$PWD"
	# default $COUNTER to 1 if it isn't already set
	if [[ -z $COUNTER ]]; then
		COUNTER=1
	fi
	# make sure $COUNTER is a number
	if [ $COUNTER -eq $COUNTER 2> /dev/null ]; then
		nwd="`pwd`" # Set new working directory (nwd) to current directory
		# Loop $nwd up directory tree one at a time
		until [[ $COUNTER -lt 1 ]]; do
			nwd=`dirname "$nwd"`
			let COUNTER-=1
		done
		cd "$nwd" # change directories to the new working directory
	else
		# print usage and return error
		echo "usage: up [NUMBER]"
		return 1
	fi
	OLDPWD="$END_OLDPWD"
}