#! /bin/sh

if [ ! -r ChangeLog ] ; then
  echo ChangeLog does not exist
  exit 1
fi

if [ $# -ne 1 ] ; then
  echo no file to prepend to ChangeLog specified
  exit 1
fi

if [ ! -r $1 ] ; then
  echo $1 does not exist so can not be prepended to ChangeLog
  exit 1
fi

mv ChangeLog XXX
cat $1 XXX > ChangeLog
rm -f XXX
exit 0