#!/usr/bin/ksh
PROGNAME=`basename $0`

TMP_DIR=${TMP_DIR:-/var/tmp}

usage()
{
    {
        echo "Usage: $PROGNAME <file>"
    } >&2
    exit 1   
}


[ "X$1" = X -o "X$2" != X ] && usage
[ ! -r $1 ] && { echo "$PROGNAME: ERROR: can't read $1" >&2; exit 1; }

#  Take a copy of the file, but not the permissions
cat $1 > $TMP_DIR/$PROGNAME.$$.cp

#  Unlock the file without mailing the locker
rcs -u -M $1

#  That left it in a locked state so trying to do a 'co -l' will fail
#  even with '-q' so remove what we have.
rm $1

#  Now check it out
co -l $1

#  Now restore the copy
cat $TMP_DIR/$PROGNAME.$$.cp > $1