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-rw-r--r--rdiff-backup/rdiff-backup.111
1 files changed, 9 insertions, 2 deletions
diff --git a/rdiff-backup/rdiff-backup.1 b/rdiff-backup/rdiff-backup.1
index 33cc8b6..cbd61a1 100644
--- a/rdiff-backup/rdiff-backup.1
+++ b/rdiff-backup/rdiff-backup.1
@@ -378,8 +378,15 @@ hours, and 7 seconds. In this context, a month means 30 days, a year
is 365 days, and a day is always 86400 seconds.
rdiff-backup cannot remove-older-than and back up or restore in a
-single session. If you want to, for instance, backup a directory and
-remove old files in it, you must run rdiff-backup twice.
+single session. In order to both backup a directory and remove old
+files in it, you must run rdiff-backup twice.
+
+By default, rdiff-backup will only delete information from one session
+at a time. To remove two or more sessions at the same time, supply the
+.B --force
+option (rdiff-backup will tell you if
+.B --force
+is required).
Note that snapshots of deleted files are covered by this operation.
Thus if you deleted a file two weeks ago, backed up immediately