#!/bin/rc

if(! ~ $#* 1){
	echo 'usage: patch/undo patch-name' >[1=2]
	exit usage
}
. /rc/bin/patch/defs
mountfs

test -e /n/dist/386 || bind / /n/dist || fail no dist

d=/n/dist/dist/patch/$1
must cd $d

fn xxx {
	if(test -e $2.backup){
		echo cp $2.backup $1 >[1=2]
		cpfile $2.backup /n/dist$1
	}
	if not{
		echo rm -rf /n/dist$1
		rm -rf /n/dist$1
	}
}

cat files | sed 's/^/xxx /' |rc
rm -rf /n/dist/dist/patch/$1