Script snippet to quickly navigate many levels up in the folder structure

changedir

##
# Go back multiple directories at once.
#
# Example :
#
# shell> .. 5
#
# This will take you 5 directories back in the file structure. This is the same as typing
#
# shell> cd ../../../../..
##
.. ()
{
        if [[ "$1" == [1-9] ]] ; then
                limit=$1;
        else
                ##echo "Illegal number of directories [1-9]. Defaulting to 1"
                limit=1;
        fi
        c=0
        until [ $c -eq $limit ]
        do
           cd ..
           c=$(( $c + 1 ))
        done
}