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-rw-r--r--man/man1/vac.19
1 files changed, 8 insertions, 1 deletions
diff --git a/man/man1/vac.1 b/man/man1/vac.1
index 7de41ee6..3ce718df 100644
--- a/man/man1/vac.1
+++ b/man/man1/vac.1
@@ -34,7 +34,7 @@ vac, unvac \- create, extract a vac archive on Venti
.PP
.B unvac
[
-.B -Tctv
+.B -Tcdtv
] [
.B -h
.I host
@@ -207,6 +207,13 @@ to the time listed in the archive.
.B -c
Write extracted files to standard output instead of creating a file.
.TP
+.B -d
+Reduce the number of blocks read from Venti by
+comparing the files to be stored with their counterparts
+in the file system.
+This option cannot be used with
+.BR -c .
+.TP
.B -t
Print a list of the files to standard output rather than extracting them.
.TP