purge-packages: purgedir needs to be abs path

make topdir absolute if passed from first parameter

diff --git a/purge-packages.sh b/purge-packages.sh
index d93e6df77c905546d627bd7648d1ffaa1b9dd21a..d59bb803888df9ea7a6aa0b4f8b6aa70defc107a 100755 (executable)
--- a/purge-packages.sh
+++ b/purge-packages.sh
@@ -6,7 +6,8 @@ set -e
 
 CALL_GC=${CALL_GC:-'no'}
 
-topdir=$(rpm -E %_topdir)
+topdir="${1:-$(rpm -E %_topdir)}"
+topdir=$(readlink -f "$topdir")
 purgedir=$topdir/purged
 cd "$topdir"