Sed rename script

gistfile1.txt

#!/bin/sh

part2() {
    NEWDIR=`dirname "$1"`
    cd "$NEWDIR"
    FF=`echo "$1" | awk -F: '{print $2}'`
    DIR=`find . -name $FF.dpx | head -1 | xargs dirname | sed s!^\./!!`
    cd "$OLDPWD"
    echo $DIR
}

part1 () { echo `dirname "$1" | awk -F\/ '{print $(NF)}'`; }

P1=`part1 "$1"`
P2=`part2 "$1"`
echo "$1" "${P1}_$P2.mov";