X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/3e3bb970a8316545428fe89e0bf82ea2be92b482..cc2d4cbd8ca150504127f375d8b51b194958d95b:/tcpdump.1.in

diff --git a/tcpdump.1.in b/tcpdump.1.in
index 6d873068..984c1964 100644
--- a/tcpdump.1.in
+++ b/tcpdump.1.in
@@ -361,6 +361,9 @@ Savefiles will have the name specified by
 which should include a time format as defined by
 .BR strftime (3).
 If no time format is specified, each new file will overwrite the previous.
+Whenever a generated filename is not unique, tcpdump will overwrite the
+preexisting data; providing a time specification that is coarser than the
+capture period is therefore not advised.
 .IP
 If used in conjunction with the
 .B \-C
@@ -684,16 +687,20 @@ Print the timestamp, as seconds since January 1, 1970, 00:00:00, UTC, and
 fractions of a second since that time, on each dump line.
 .TP
 .B \-ttt
-Print a delta (micro-second resolution) between current and previous line
-on each dump line.
+Print a delta (microsecond or nanosecond resolution depending on the
+.B \-\-time\-stamp-precision
+option) between current and previous line on each dump line.
+The default is microsecond resolution.
 .TP
 .B \-tttt
 Print a timestamp, as hours, minutes, seconds, and fractions of a second
 since midnight, preceded by the date, on each dump line.
 .TP
 .B \-ttttt
-Print a delta (micro-second resolution) between current and first line
-on each dump line.
+Print a delta (microsecond or nanosecond resolution depending on the
+.B \-\-time\-stamp-precision
+option) between current and first line on each dump line.
+The default is microsecond resolution.
 .TP
 .B \-u
 Print undecoded NFS handles.
@@ -797,9 +804,15 @@ files, allowing them to sort correctly.
 Used in conjunction with the
 .B \-G
 option, this will limit the number of rotated dump files that get
-created, exiting with status 0 when reaching the limit. If used with
+created, exiting with status 0 when reaching the limit.
+.IP
+If used in conjunction with both
 .B \-C
-as well, the behavior will result in cyclical files per timeslice.
+and
+.B \-G,
+the
+.B \-W
+option will currently be ignored, and will only affect the file name.
 .TP
 .B \-x
 When parsing and printing,