X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=chiark-utils.git;a=blobdiff_plain;f=backup%2Fsnap-drop;h=85c443dc57de7cc70464fa5fb4babf58099ac5e6;hp=39deaf16679b663a0af203c2ba1b51a08b3c636e;hb=b29db042447c2b79fc3b9fc95c2602daeee3f5c6;hpb=7d4185f54b99fef18f8661ea1d5974171f997f1e

diff --git a/backup/snap-drop b/backup/snap-drop
index 39deaf1..85c443d 100755
--- a/backup/snap-drop
+++ b/backup/snap-drop
@@ -1,7 +1,10 @@
 #!/bin/sh
 set -e
 vd=/var/lib/chiark-backup
+if [ "x$1" != "x" ]; then
+	vd="$1"; shift
+fi
 cd "$vd"
-test -f snap-drop
+test -f snap-drop || exit 0
 sh -x snap-drop || true
 rm snap-drop