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authorFrancois-Xavier Le Bail <devel.fx.lebail@orange.fr>2020-02-26 16:55:21 +0100
committerFrancois-Xavier Le Bail <devel.fx.lebail@orange.fr>2020-02-26 20:12:30 +0100
commit4d810e062dc6bdfd75f7c70a24c90eeaf3094636 (patch)
tree31d0d173d37240fce940dd6deb0fa7ff9cb3ed6b /tcpdump.1.in
parenta3bbf1e278bcfd4479f06b499d3c993adecda69f (diff)
downloadtcpdump-4d810e062dc6bdfd75f7c70a24c90eeaf3094636.tar.gz
Print an optional packet count on stderr instead of printing packets
This change add an option to print only on stderr the packet count when reading capture file(s) instead of parsing/printing the packets. If a filter is specified on the command line, tcpdump counts only packets that were matched by the filter expression. The option name is '--count'.
Diffstat (limited to 'tcpdump.1.in')
-rw-r--r--tcpdump.1.in9
1 files changed, 9 insertions, 0 deletions
diff --git a/tcpdump.1.in b/tcpdump.1.in
index ccecde6a..39bfe22b 100644
--- a/tcpdump.1.in
+++ b/tcpdump.1.in
@@ -39,6 +39,9 @@ tcpdump \- dump traffic on a network
.I count
]
[
+.B \-\-count
+]
+[
.B \-C
.I file_size
]
@@ -242,6 +245,12 @@ units of KiB (1024 bytes).
.BI \-c " count"
Exit after receiving \fIcount\fP packets.
.TP
+.BI \-\-count
+Print only on stderr the packet count when reading capture file(s) instead
+of parsing/printing the packets. If a filter is specified on the command
+line, \fItcpdump\fP counts only packets that were matched by the filter
+expression.
+.TP
.BI \-C " file_size"
Before writing a raw packet to a savefile, check whether the file is
currently larger than \fIfile_size\fP and, if so, close the current