#! /bin/bash
set -e

TARGET=$1
NEWCHECKSUM=
CHECKSUM="first run"
shift

"$@"
NEWCHECKSUM=$(md5sum $TARGET)

while [ "x$CHECKSUM" != "x$NEWCHECKSUM" ]
do
 echo OLD: $CHECKSUM
 echo NEW: $NEWCHECKSUM
 CHECKSUM=$NEWCHECKSUM
 rm $TARGET
 "$@"
 NEWCHECKSUM=$(md5sum $TARGET)
done