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-rw-r--r--doc/tethereal.pod.template6
1 files changed, 5 insertions, 1 deletions
diff --git a/doc/tethereal.pod.template b/doc/tethereal.pod.template
index 71736beeb1..ce7fde353f 100644
--- a/doc/tethereal.pod.template
+++ b/doc/tethereal.pod.template
@@ -7,7 +7,7 @@ tethereal - Dump and analyze network traffic
B<tethereal>
S<[ B<-a> capture autostop condition ] ...>
-S<[ B<-b> number of ring buffer files ]>
+S<[ B<-b> number of ring buffer files [:duration] ]>
S<[ B<-c> count ]>
S<[ B<-D> ]>
S<[ B<-f> capture filter expression ]>
@@ -155,6 +155,10 @@ point it'll discard the data in the first file and start writing to that
file. When that file fills up, B<Tethereal> will discard the data in
the next file and start writing to it, and so on.
+If the optional duration is specified, B<Tethereal> will switch also
+to the next file when the specified number of seconds has elapsed even
+if the current file is not completely fills up.
+
When the capture completes, the files will be renamed to have names
based on the number of the file and on the date and time at which
packets most recently started being written to the file.