diff options
| -rw-r--r-- | tcpdump.1.in | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/tcpdump.1.in b/tcpdump.1.in index a9664692..6db259e9 100644 --- a/tcpdump.1.in +++ b/tcpdump.1.in @@ -140,7 +140,9 @@ tcpdump \- dump traffic on a network .SH DESCRIPTION .LP \fITcpdump\fP prints out a description of the contents of packets on a -network interface that match the boolean \fIexpression\fP. It can also +network interface that match the boolean \fIexpression\fP; the +description is preceded by a time stamp, printed, by default, as hours, +minutes, seconds, and fractions of a second since midnight. It can also be run with the .B \-w flag, which causes it to save the packet data to a file for later @@ -655,14 +657,16 @@ an encapsulated PGM packet. \fIDon't\fP print a timestamp on each dump line. .TP .B \-tt -Print an unformatted timestamp on each dump line. +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. .TP .B \-tttt -Print a timestamp in default format proceeded by date on each dump line. +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 |