TShark 1.12.1 (Git Rev Unknown from unknown)
Dump and analyze network traffic.
See http://www.wireshark.org for more information.
Copyright 1998-2014 Gerald Combs <gerald@wireshark.org> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Usage: tshark [options] ...
Capture interface:
-i <interface> name or idx of interface (def: first non-loopback)
-f <capture filter> packet filter in libpcap filter syntax
-s <snaplen> packet snapshot length (def: 65535)
-p don't capture in promiscuous mode
-I capture in monitor mode, if available
-B <buffer size> size of kernel buffer (def: 2MB)
-y <link type> link layer type (def: first appropriate)
-D print list of interfaces and exit
-L print list of link-layer types of iface and exit
Capture stop conditions:
-c <packet count> stop after n packets (def: infinite)
-a <autostop cond.> ... duration:NUM - stop after NUM seconds
filesize:NUM - stop this file after NUM KB
files:NUM - stop after NUM files
Capture output:
-b <ringbuffer opt.> ... duration:NUM - switch to next file after NUM secs
filesize:NUM - switch to next file after NUM KB
files:NUM - ringbuffer: replace after NUM files
Input file:
-r <infile> set the filename to read from (- to read from stdin)
Processing:
-2 perform a two-pass analysis
-R <read filter> packet Read filter in Wireshark display filter syntax
-Y <display filter> packet displaY filter in Wireshark display filter
syntax
-n disable all name resolutions (def: all enabled)
-N <name resolve flags> enable specific name resolution(s): "mntC"
-d <layer_type>==<selector>,<decode_as_protocol> ...
"Decode As", see the man page for details
Example: tcp.port==8888,http
-H <hosts file> read a list of entries from a hosts file, which will
then be written to a capture file. (Implies -W n)
Output:
-w <outfile|-> write packets to a pcap-format file named "outfile"
(or to the standard output for "-")
-C <config profile> start with specified configuration profile
-F <output file type> set the output file type, default is pcapng
an empty "-F" option will list the file types
-V add output of packet tree (Packet Details)
-O <protocols> Only show packet details of these protocols, comma
separated
-P print packet summary even when writing to a file
-S <separator> the line separator to print between packets
-x add output of hex and ASCII dump (Packet Bytes)
-T pdml|ps|psml|text|fields
format of text output (def: text)
-e <field> field to print if -Tfields selected (e.g. tcp.port,
_ws.col.Info)
this option can be repeated to print multiple fields
-E<fieldsoption>=<value> set options for output when -Tfields selected:
header=y|n switch headers on and off
separator=/t|/s|<char> select tab, space, printable character as separator
occurrence=f|l|a print first, last or all occurrences of each field
aggregator=,|/s|<char> select comma, space, printable character as
aggregator
quote=d|s|n select double, single, no quotes for values
-t a|ad|d|dd|e|r|u|ud output format of time stamps (def: r: rel. to first)
-u s|hms output format of seconds (def: s: seconds)
-l flush standard output after each packet
-q be more quiet on stdout (e.g. when using statistics)
-Q only log true errors to stderr (quieter than -q)
-g enable group read access on the output file(s)
-W n Save extra information in the file, if supported.
n = write network address resolution information
-X <key>:<value> eXtension options, see the man page for details
-z <statistics> various statistics, see the man page for details
--capture-comment <comment>
add a capture comment to the newly created
output file (only for pcapng)
Miscellaneous:
-h display this help and exit
-v display version info and exit
-o <name>:<value> ... override preference setting
-K <keytab> keytab file to use for kerberos decryption
-G [report] dump one of several available reports and exit
default report="fields"
use "-G ?" for more help
WARNING: dumpcap will enable kernel BPF JIT compiler if available.
You might want to reset it
By doing "echo 0 > /proc/sys/net/core/bpf_jit_enable"
