PatchManpath() {
TIMESTAMP=`date "+%Y%m%d-%k_%M_%S"`
retval=0
manconf_path="/etc/man.conf"
manpath_path="/etc/manpath.config"
mancf_path="/usr/share/man.cf"
manconfig_path="/etc/man.config"
mandbconf_path="/etc/man_db.conf"
manpath_str="MANDATORY_MANPATH $PREFIX/man"
manconf_str="MANPATH $PREFIX/man"
if [ -x "`which manpath`" ] ; then
    manpath=`which manpath`
else
    #only solaris haven't manpath
    [ -f "$mancf_path" ] && manpath="echo `$GREP MANPATH $mancf_path`"
fi
if [ -d "$PREFIX/man" -a -z "`$manpath 2>/dev/null | $GREP $PREFIX/man`" ] ; then
    for f in "$manpath_path" "$manconf_path" "$mancf_path" "$manconfig_path" "$mandbconf_path" ; do
	if [ -f "$f" ] ; then
	    man_str="$manconf_str"
	    case "$f" in
		"$manconf_path")
		    man_conf="$manconf_path"
		;;
		"$manpath_path")
		    man_conf="$manpath_path"
		    man_str="$manpath_str"
		;;
		"$mancf_path")
		    man_conf="$mancf_path"
		;;
		"$manconfig_path")
		    man_conf="$manconfig_path"
		;;
		"$mandbconf_path")
		    man_conf="$mandbconf_path"
		    man_str="$manpath_str"
		;;
	    esac
	    if [ -z "`$GREP "$PREFIX/man" "$man_conf" 2>/dev/null`" ] ; then
		cp -p "$man_conf" "$man_conf.$TIMESTAMP"
		echo "$man_str" >> "$man_conf"
		retval=$?
		break
	    fi
	else
	    retval=1
	fi
    done
fi
return $retval
}