add prune-archive.sh

diff --git a/bin/prune-archive.sh b/bin/prune-archive.sh
new file mode 100755 (executable)
index 0000000..42b356b
--- /dev/null
+++ b/bin/prune-archive.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+[ -d archive ] || exit 1
+
+for d in archive/*/objects/*; do bin/prune.sh $d ; done
\ No newline at end of file