# Strip trailing spaces on one or more files # Check arguments if [ "$#" -eq 0 ] ; then printf >&2 'stws: Need a filename\n' exit 2 fi # Iterate over arguments and apply the same ed(1) script to each of them for fn do ed -s -- "$fn" <<'EOF' || ex=1 g/ *$/ s/ *$// w EOF done # If any of the ed(1) commands failed, we should exit with 1 exit "${ex:-0}"