X-Git-Url: https://git.tcpdump.org/tcpdump/blobdiff_plain/33ac5fdd7acd61c78b1890c23df99591398a66fa..refs/heads/tcpdump-4.6:/tcpdump.1.in

diff --git a/tcpdump.1.in b/tcpdump.1.in
index c3bce63d..a9664692 100644
--- a/tcpdump.1.in
+++ b/tcpdump.1.in
@@ -20,18 +20,21 @@
 .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 .\"
-.TH TCPDUMP 1  "26 February 2014"
+.TH TCPDUMP 1  "11 July 2014"
 .SH NAME
 tcpdump \- dump traffic on a network
 .SH SYNOPSIS
 .na
 .B tcpdump
 [
-.B \-AbdDefhHIJKlLnNOpqRStuUvxX
+.B \-AbdDefhHIJKlLnNOpqRStuUvxX#
 ] [
 .B \-B
 .I buffer_size
-] [
+]
+.br
+.ti +8
+[
 .B \-c
 .I count
 ]
@@ -123,6 +126,13 @@ tcpdump \- dump traffic on a network
 ]
 .ti +8
 [
+.BI \-\-time\-stamp\-precision= tstamp_precision
+]
+[
+.B \-\-version
+]
+.ti +8
+[
 .I expression
 ]
 .br
@@ -354,6 +364,10 @@ option, filenames will take the form of `\fIfile\fP<count>'.
 Print the tcpdump and libpcap version strings, print a usage message,
 and exit.
 .TP
+.B \-\-version
+.PD
+Print the tcpdump and libpcap version strings and exit.
+.TP
 .B \-H
 Attempt to detect 802.11s draft mesh headers.
 .TP
@@ -425,6 +439,25 @@ List the supported time stamp types for the interface and exit.  If the
 time stamp type cannot be set for the interface, no time stamp types are
 listed.
 .TP
+.BI \-\-time\-stamp\-precision= tstamp_precision
+When capturing, set the time stamp precision for the capture to
+\fItstamp_precision\fP.  Note that availability of high precision time
+stamps (nanoseconds) and their actual accuracy is platform and hardware
+dependent.  Also note that when writing captures made with nanosecond
+accuracy to a savefile, the time stamps are written with nanosecond
+resolution, and the file is written with a different magic number, to
+indicate that the time stamps are in seconds and nanoseconds; not all
+programs that read pcap savefiles will be able to read those captures.
+.LP
+When reading a savefile, convert time stamps to the precision specified
+by \fItimestamp_precision\fP, and display them with that resolution.  If
+the precision specified is less than the precision of time stamps in the
+file, the conversion will lose precision.
+.LP
+The supported values for \fItimestamp_precision\fP are \fBmicro\fP for
+microsecond resolution and \fBnano\fP for nanosecond resolution.  The
+default is microsecond resolution.
+.TP
 .B \-K
 .PD 0
 .TP
@@ -504,7 +537,11 @@ E.g.,
 if you give this flag then \fItcpdump\fP will print ``nic''
 instead of ``nic.ddn.mil''.
 .TP
-.B \--number
+.B \-#
+.PD 0
+.TP
+.B \-\-number
+.PD
 Print an optional packet number at the beginning of the line.
 .TP
 .B \-O