#!/usr/bin/env bash

OLDIFS=$IFS
IFS="
"

for i in $*; do
        STDOUT=`/usr/bin/shred -z -f -n 7 -u "${i}" 2>&1` 
        ERR=`echo $STDOUT | cut -d: -f4`
        if (echo "${STDOUT}" | grep "failed" ); then
                zenity --error --title "File Shredder Error" --text "<b><i>${ERR}</i> while attempting to shred the file</b>:
 ${i}"
        fi
done