Change dir recursively

cdr.sh

#!/bin/bash
#
# this script should not be run directly,
# instead you need to source it from your .bashrc,
# by adding this line:
#   . ~/bin/cdr.sh
#
function cdr() {
    replacement=$1
    array=(${PWD//\// })
    for ((i = ${#array[@]} - 1; i >= 0; i--)); do
        directory=${PWD/${array[i]}/$replacement}
        if [ -d $directory ]; then
            # show whats changed, and cd to new location
            echo $PWD
            echo $directory
            cd $directory
            return
        fi
    done
    echo "Valid path not found"
}