bup-save.md: note that restoration requires --name or the commit/tree id.

Signed-off-by: Rob Browning <rlb@defaultvalue.org>

diff --git a/Documentation/bup-save.md b/Documentation/bup-save.md
index 3926f1b04ca82d84c9107cedae95f69be66b5166..e71cb1f79c5a575229cf934d039c18ee25cf90f7 100644 (file)
--- a/Documentation/bup-save.md
+++ b/Documentation/bup-save.md
@@ -16,6 +16,10 @@ bup save [-r *host*:*path*] \<-t|-c|-n *name*\> [-#] [-f *indexfile*]
 `bup save` saves the contents of the given files or paths
 into a new backup set and optionally names that backup set.
 
+Note that in order to refer to your backup set later (i.e. for
+restoration), you must either specify `--name` (the normal case), or
+record the tree or commit id printed by `--tree` or `--commit`.
+
 Before trying to save files using `bup save`, you should
 first update the index using `bup index`.  The reasons
 for separating the two steps are described in the man page