release open file (OS X)

#! /bin/bash
# This script will list all open processes for the given file and give you an option to quit them.
declare -a PROCS


s=$(fuser -f "$1")
PROCS=( $s )
if [ "${#PROCS[@]}" == 0 ] ; then
    echo "File is not open."
else
    for element in "${PROCS[@]}"
    do
        ps "$element"
    done

    echo ""
    read -p "Type the PID number to kill a given process, 'a' to kill all or 'q' to quit: "

    if [ "$REPLY" == "a" ] || [ "$REPLY" == "A" ] ; then
        for element in "${PROCS[@]}"
        do
         kill "$element" || exit 1;
        done
        echo "Done"
    elif [ "$REPLY" == "q" ] || [ "$REPLY" == "Q" ]; then
        echo "User cancelled!"
        exit 0;
    else
        kill "$REPLY" || exit 1
    fi
fi

exit 0;