|
HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
|
|
NAME | SYNOPSIS | DESCRIPTION | INPUT | OUTPUT | OPTIONS | DISSECTION OPTIONS | DIAGNOSTIC OPTIONS | READ FILTER SYNTAX | FILES | ENVIRONMENT VARIABLES | SEE ALSO | NOTES | AUTHORS |
|
|
|
RAWSHARK(1) RAWSHARK(1)
rawshark - Dump and analyze raw pcap data
rawshark [ -d <encap:linktype>|<proto:protoname> ] [ -F <field to
display> ] [ -l ] [ -m <bytes> ] [ -o <preference setting> ] ... [
-p ] [ -r <pipe>|- ] [ -R <read (display) filter> ] [ -s ] [ -S
<field format> ] [ options ]
rawshark -h|--help
rawshark -v|--version
Rawshark reads a stream of packets from a file or pipe, and prints
a line describing its output, followed by a set of matching fields
for each packet on stdout.
Unlike TShark, Rawshark makes no assumptions about encapsulation
or input. The -d and -r flags must be specified in order for it to
run. One or more -F flags should be specified in order for the
output to be useful. The other flags listed above follow the same
conventions as Wireshark and TShark.
Rawshark expects input records with the following format by
default. This matches the format of the packet header and packet
data in a pcap-formatted file on disk.
struct rawshark_rec_s {
uint32_t ts_sec; /* Time stamp (seconds) */
uint32_t ts_usec; /* Time stamp (microseconds) */
uint32_t caplen; /* Length of the packet buffer */
uint32_t len; /* "On the wire" length of the packet */
uint8_t data[caplen]; /* Packet data */
};
If -p is supplied rawshark expects the following format. This
matches the struct pcap_pkthdr structure and packet data used in
libpcap or Npcap. This structure’s format is platform-dependent;
the size of the tv_sec field in the struct timeval structure could
be 32 bits or 64 bits. For rawshark to work, the layout of the
structure in the input must match the layout of the structure in
rawshark. Note that this format will probably be the same as the
previous format if rawshark is a 32-bit program, but will not
necessarily be the same if rawshark is a 64-bit program.
struct rawshark_rec_s {
struct timeval ts; /* Time stamp */
uint32_t caplen; /* Length of the packet buffer */
uint32_t len; /* "On the wire" length of the packet */
uint8_t data[caplen]; /* Packet data */
};
In either case, the endianness (byte ordering) of each integer
must match the system on which rawshark is running.
If one or more fields are specified via the -F flag, Rawshark
prints the number, field type, and display format for each field
on the first line as "packet number" 0. For each record, the
packet number, matching fields, and a "1" or "0" are printed to
indicate if the field matched any supplied display filter. A "-"
is used to signal the end of a field description and at the end of
each packet line. For example, the flags -F ip.src -F dns.qry.type
might generate the following output:
0 FT_IPv4 BASE_NONE - 1 FT_UINT16 BASE_HEX -
1 1="1" 0="192.168.77.10" 1 -
2 1="1" 0="192.168.77.250" 1 -
3 0="192.168.77.10" 1 -
4 0="74.125.19.104" 1 -
Note that packets 1 and 2 are DNS queries, and 3 and 4 are not.
Adding -R "not dns" still prints each line, but there’s an
indication that packets 1 and 2 didn’t pass the filter:
0 FT_IPv4 BASE_NONE - 1 FT_UINT16 BASE_HEX -
1 1="1" 0="192.168.77.10" 0 -
2 1="1" 0="192.168.77.250" 0 -
3 0="192.168.77.10" 1 -
4 0="74.125.19.104" 1 -
Also note that the output may be in any order, and that multiple
matching fields might be displayed.
-d <encapsulation>
Specify how the packet data should be dissected. The
encapsulation is of the form type:value, where type is one of:
encap:name Packet data should be dissected using the
libpcap/Npcap data link type (DLT) name, e.g. encap:EN10MB for
Ethernet. Names are converted using
pcap_datalink_name_to_val(). A complete list of DLTs can be
found at https://www.tcpdump.org/linktypes.html.
encap:number Packet data should be dissected using the
libpcap/Npcap LINKTYPE_ number, e.g. encap:105 for raw IEEE
802.11 or encap:101 for raw IP.
proto:protocol Packet data should be passed to the specified
Wireshark protocol dissector, e.g. proto:http for HTTP data.
-F <field to display>
Add the matching field to the output. Fields are any valid
display filter field. More than one -F flag may be specified,
and each field can match multiple times in a given packet. A
single field may be specified per -F flag. If you want to
apply a display filter, use the -R flag.
-h|--help
Print the version number and options and exit.
-l
Flush the standard output after the information for each
packet is printed. (This is not, strictly speaking,
line-buffered if -V was specified; however, it is the same as
line-buffered if -V wasn’t specified, as only one line is
printed for each packet, and, as -l is normally used when
piping a live capture to a program or script, so that output
for a packet shows up as soon as the packet is seen and
dissected, it should work just as well as true line-buffering.
We do this as a workaround for a deficiency in the Microsoft
Visual C++ C library.)
This may be useful when piping the output of TShark to another
program, as it means that the program to which the output is
piped will see the dissected data for a packet as soon as
TShark sees the packet and generates that output, rather than
seeing it only when the standard output buffer containing that
data fills up.
-m <memory limit bytes>
Limit rawshark’s memory usage to the specified number of
bytes. POSIX (non-Windows) only.
-o <preference>:<value>
Set a preference value, overriding the default value and any
value read from a preference file. The argument to the option
is a string of the form prefname:value, where prefname is the
name of the preference (which is the same name that would
appear in the preference file), and value is the value to
which it should be set.
-p
Assume that packet data is preceded by a pcap_pkthdr struct as
defined in pcap.h. On some systems the size of the timestamp
data will be different from the data written to disk. On other
systems they are identical and this flag has no effect.
-r <pipe>|-
Read packet data from input source. It can be either the name
of a FIFO (named pipe) or ``-'' to read data from the standard
input, and must have the record format specified above.
If you are sending data to rawshark from a parent process on
Windows you should not close rawshark’s standard input handle
prematurely, otherwise the C runtime might trigger an
exception.
-R|--read-filter <read (display) filter>
Cause the specified filter (which uses the syntax of
read/display filters, rather than that of capture filters) to
be applied before printing the output. Read filters and
display filters are synonymous in rawshark.
-s
Allows standard pcap files to be used as input, by skipping
over the 24 byte pcap file header.
-S
Use the specified format string to print each field. The
following formats are supported:
%D Field name or description, e.g. "Type" for dns.qry.type
%N Base 10 numeric value of the field.
%S String value of the field.
For something similar to Wireshark’s standard display ("Type:
A (1)") you could use %D: %S (%N).
-v|--version
Print the full version information and exit.
-Y|--display-filter <read (display) filter>
Cause the specified filter (which uses the syntax of
read/display filters, rather than that of capture filters) to
be applied before printing the output. Read filters and
display filters are synonymous in rawshark.
--disable-all-protocols
Disable dissection of all protocols.
--disable-protocol <proto_name>[,<proto_name>,...]
Disable dissection of proto_name. Use a proto_name of ALL to
override your chosen profile’s default enabled protocol list
and temporarily disable all protocols.
--disable-heuristic <short_name>
Disable dissection of heuristic protocol.
--enable-protocol <proto_name>[,<proto_name>,...]
Enable dissection of proto_name. Use a proto_name of ALL to
override your chosen profile’s default disabled protocol list
and temporarily enable all protocols which are enabled by
default.
If a protocol is implicated in both --disable-protocol and
--enable-protocol, the protocol is enabled. This allows you to
temporarily disable all protocols but a list of exceptions.
Example: --disable-protocol ALL --enable-protocol eth,ip
--enable-heuristic <short_name>
Enable dissection of heuristic protocol.
-K <keytab>
Load kerberos crypto keys from the specified keytab file. This
option can be used multiple times to load keys from several
files.
Example: -K krb5.keytab
-n
Disable network object name resolution (such as hostname, TCP
and UDP port names); the -N option might override this one.
-N <name resolving flags>
Turn on name resolving only for particular types of addresses
and port numbers, with name resolving for other types of
addresses and port numbers turned off. This option (along with
-n) can be specified multiple times; the last value given
overrides earlier ones. This option and -n override the
options from the preferences, including preferences set via
the -o option. If both -N and -n options are not present, the
values from the preferences are used, which default to -N dmN.
The argument is a string that may contain the letters:
d to enable resolution from captured DNS packets
g to enable IP address geolocation information lookup from
configured MaxMind databases
m to enable MAC address resolution
n to enable network address resolution
N to enable using external resolvers (e.g., DNS) for network
address resolution; no effect without n also enabled.
s to enable address resolution using SNI information found in
captured handshake packets
t to enable transport-layer port number resolution
v to enable VLAN IDs to names resolution
--only-protocols <protocols>
Only enable dissection of these protocols, comma separated.
Disable everything else.
-t (a|ad|adoy|d|dd|e|r|u|ud|udoy)[.[N]]|.[N]
Set the format of the packet timestamp displayed in the
default time column. The format can be one of:
a absolute: The absolute time, as local time in your time
zone, is the actual time the packet was captured, with no date
displayed
ad absolute with date: The absolute date, displayed as
YYYY-MM-DD, and time, as local time in your time zone, is the
actual time and date the packet was captured
adoy absolute with date using day of year: The absolute date,
displayed as YYYY/DOY, and time, as local time in your time
zone, is the actual time and date the packet was captured
d delta: The delta time is the time since the previous packet
was captured
dd delta_displayed: The delta_displayed time is the time since
the previous displayed packet was captured
e epoch: The time in seconds since epoch (Jan 1, 1970
00:00:00)
r relative: The relative time is the time elapsed between the
first packet and the current packet
u UTC: The absolute time, as UTC with a "Z" suffix, is the
actual time the packet was captured, with no date displayed
ud UTC with date: The absolute date, displayed as YYYY-MM-DD,
and time, as UTC with a "Z" suffix, is the actual time and
date the packet was captured
udoy UTC with date using day of year: The absolute date,
displayed as YYYY/DOY, and time, as UTC with a "Z" suffix, is
the actual time and date the packet was captured
.[N] Set the precision: N is the number of decimals (0 through
9). If using "." without N, automatically determine precision
from trace.
The default format is relative with precision based on capture
format.
-u <s|hms>
Specifies how packet timestamp formats in -t which are
relative times (i.e. relative, delta, and delta_displayed) are
displayed. Valid choices are:
s for seconds
hms for hours, minutes, and seconds
The default format is seconds.
--log-level <level>
Set the active log level. Supported levels in lowest to
highest order are "noisy", "debug", "info", "message",
"warning", "critical", and "error". Messages at each level and
higher will be printed, for example "warning" prints
"warning", "critical", and "error" messages and "noisy" prints
all messages. Levels are case insensitive.
--log-fatal <level>
Abort the program if any messages are logged at the specified
level or higher. For example, "warning" aborts on any
"warning", "critical", or "error" messages.
--log-domains <list>
Only print messages for the specified log domains, e.g.
"GUI,Epan,sshdump". List of domains must be comma-separated.
Can be negated with "!" as the first character (inverts the
match).
--log-debug <list>
Force the specified domains to log at the "debug" level. List
of domains must be comma-separated. Can be negated with "!" as
the first character (inverts the match).
--log-noisy <list>
Force the specified domains to log at the "noisy" level. List
of domains must be comma-separated. Can be negated with "!" as
the first character (inverts the match).
--log-fatal-domains <list>
Abort the program if any messages are logged for the specified
log domains. List of domains must be comma-separated.
--log-file <path>
Write log messages and stderr output to the specified file.
For a complete table of protocol and protocol fields that are
filterable in Rawshark see the wireshark-filter(4) manual page.
These files contain various Wireshark configuration settings.
Preferences
The preferences files contain global (system-wide) and
personal preference settings. If the system-wide preference
file exists, it is read first, overriding the default
settings. If the personal preferences file exists, it is read
next, overriding any previous values. Note: If the command
line flag -o is used (possibly more than once), it will in
turn override values from the preferences files.
The preferences settings are in the form prefname:value, one
per line, where prefname is the name of the preference and
value is the value to which it should be set; white space is
allowed between : and value. A preference setting can be
continued on subsequent lines by indenting the continuation
lines with white space. A # character starts a comment that
runs to the end of the line:
# Vertical scrollbars should be on right side?
# TRUE or FALSE (case-insensitive).
gui.scrollbar_on_right: TRUE
The global preferences file is looked for in the wireshark
directory under the share subdirectory of the main
installation directory. On macOS, this would typically be
/Application/Wireshark.app/Contents/Resources/share; on other
UNIX-compatible systems, such as Linux, \*BSD, Solaris, and
AIX, this would typically be /usr/share/wireshark/preferences
for system-installed packages and
/usr/local/share/wireshark/preferences for locally-installed
packages; on Windows, this would typically be C:\Program
Files\Wireshark\preferences.
On UNIX-compatible systems, the personal preferences file is
looked for in $XDG_CONFIG_HOME/wireshark/preferences, (or, if
$XDG_CONFIG_HOME/wireshark does not exist while
$HOME/.wireshark does exist, $HOME/.wireshark/preferences);
this is typically $HOME/.config/wireshark/preferences. On
Windows, the personal preferences file is looked for in
%APPDATA%\Wireshark\preferences (or, if %APPDATA% isn’t
defined, %USERPROFILE%\Application
Data\Wireshark\preferences).
Disabled (Enabled) Protocols
The disabled_protos files contain system-wide and personal
lists of protocols that have been disabled, so that their
dissectors are never called. The files contain protocol names,
one per line, where the protocol name is the same name that
would be used in a display filter for the protocol:
http
tcp # a comment
If a protocol is listed in the global disabled_protos file it
cannot be enabled by the user.
The global disabled_protos file uses the same directory as the
global preferences file.
The personal disabled_protos file uses the same directory as
the personal preferences file.
The disabled_protos files list only protocols that are enabled
by default but have been disabled; protocols that are disabled
by default (such as some postdissectors) are not listed. There
are analogous enabled_protos files for protocols that are
disabled by default but have been enabled.
Heuristic Dissectors
The heuristic_protos files contain system-wide and personal
lists of heuristic dissectors and indicate whether they are
enabled or disabled. The files contain heuristic dissector
unique short names, one per line, followed by a comma and 0
for disabled and 1 for enabled:
quic,1
rtcp_stun,1
rtcp_udp,1
rtp_stun,0
rtp_udp,0
tls_tcp,1
The global heuristic_protos file uses the same directory as
the global preferences file.
The personal heuristic_protos file uses the same directory as
the personal preferences file.
Name Resolution (hosts)
Entries in hosts files in the global and personal preferences
directory are used to resolve IPv4 and IPv6 addresses before
any other attempts are made to resolve them. The file has the
standard hosts file syntax; each line contains one IP address
and name, separated by whitespace. The personal hosts file, if
present, overrides the one in the global directory.
Capture filter name resolution is handled by libpcap on
UNIX-compatible systems, such as Linux, macOS, \*BSD, Solaris,
and AIX, and Npcap on Windows. As such the Wireshark personal
hosts file will not be consulted for capture filter name
resolution.
Name Resolution (subnets)
If an IPv4 address cannot be translated via name resolution
(no exact match is found) then a partial match is attempted
via the subnets file. Both the global subnets file and
personal subnets files are used if they exist.
Each line of this file consists of an IPv4 address, a subnet
mask length separated only by a / and a name separated by
whitespace. While the address must be a full IPv4 address, any
values beyond the mask length are subsequently ignored.
An example is:
# Comments must be prepended by the # sign! 192.168.0.0/24
ws_test_network
A partially matched name will be printed as
"subnet-name.remaining-address". For example, "192.168.0.1"
under the subnet above would be printed as
"ws_test_network.1"; if the mask length above had been 16
rather than 24, the printed address would be
"ws_test_network.0.1".
Name Resolution (ethers)
The ethers files are consulted to correlate 6-byte EUI-48 and
8-byte EUI-64 hardware addresses to names. First the personal
ethers file is tried and if an address is not found there the
global ethers file is tried next.
The file has a similar format to that defined by ethers(5) on
some UNIX-like systems. Each line contains one hardware
address and name, separated by whitespace (tabs or spaces).
The hexadecimal digits of the hardware address are separated
by colons (:), dashes (-) or periods (.). The same separator
character must be used consistently in an address. A #
indicates a comment that extends to the rest of the line. Both
6-byte MAC and 8-byte EUI-64 addresses are supported. The
following four lines are valid lines of an ethers file:
ff:ff:ff:ff:ff:ff Broadcast
c0-00-ff-ff-ff-ff TR_broadcast
00.00.00.00.00.00 Zero_broadcast
00:00:00:00:00:00:00:00 EUI64_zero_broadcast
Note that this accepts a greater variety of formats than the
file defined by ethers(5) on most UN*X systems.
The global ethers file is looked for in the /etc directory on
UNIX-compatible systems, such as Linux, macOS, \*BSD, Solaris,
and AIX, and in the main installation directory (for example,
C:\Program Files\Wireshark) on Windows systems.
The personal ethers file is looked for in the same directory
as the personal preferences file.
Capture filter name resolution is handled by libpcap on
UNIX-compatible systems and Npcap on Windows. As such the
Wireshark personal ethers file will not be consulted for
capture filter name resolution.
Name Resolution (manuf)
The manuf file is used to match the 3-byte vendor portion of a
6-byte hardware address with the manufacturer’s name; it can
also contain well-known MAC addresses and address ranges
specified with a netmask. The format of the file is similar
the ethers files, except that entries such as:
00:00:0C Cisco Cisco Systems, Inc
can be provided, with the 3-byte OUI and both an abbreviated
and long name for a vendor, and entries such as:
00-00-0C-07-AC/40 All-HSRP-routers
can be specified, with a MAC address and a mask indicating how
many bits of the address must match. The above entry, for
example, has 40 significant bits, or 5 bytes, and would match
addresses from 00-00-0C-07-AC-00 through 00-00-0C-07-AC-FF.
The mask need not be a multiple of 8.
A global manuf file is looked for in the same directory as the
global preferences file, and a personal manuf file is looked
for in the same directory as the personal preferences file.
In earlier versions of Wireshark, official information from
the IEEE Registration Authority was distributed in this format
as the global manuf file. This information is now compiled in
to speed program startup, but the internal information can be
written out in this format with tshark -G manuf.
In addition to the manuf file, another file with the same
format, wka, is looked for in the global directory. This file
is distributed with Wireshark, and contains data about
well-known MAC adddresses and address ranges assembled from
various non IEEE but respected sources.
Name Resolution (services)
The services file is used to translate port numbers into
names. Both the global services file and personal services
files are used if they exist.
The file has the standard services file syntax; each line
contains one (service) name and one transport identifier
separated by white space. The transport identifier includes
one port number and one transport protocol name (typically
tcp, udp, or sctp) separated by a /.
An example is:
mydns 5045/udp # My own Domain Name Server mydns
5045/tcp # My own Domain Name Server
In earlier versions of Wireshark, official information from
the IANA Registry was distributed in this format as the global
services file. This information is now compiled in to speed
program startup, but the internal information can be written
out in this format with tshark -G services.
Name Resolution (ipxnets)
The ipxnets files are used to correlate 4-byte IPX network
numbers to names. First the global ipxnets file is tried and
if that address is not found there the personal one is tried
next.
The format is the same as the ethers file, except that each
address is four bytes instead of six. Additionally, the
address can be represented as a single hexadecimal number, as
is more common in the IPX world, rather than four hex octets.
For example, these four lines are valid lines of an ipxnets
file:
C0.A8.2C.00 HR
c0-a8-1c-00 CEO
00:00:BE:EF IT_Server1
110f FileServer3
The global ipxnets file is looked for in the /etc directory on
UNIX-compatible systems, such as Linux, macOS, \*BSD, Solaris,
and AIX, and in the main installation directory (for example,
C:\Program Files\Wireshark) on Windows systems.
The personal ipxnets file is looked for in the same directory
as the personal preferences file.
Name Resolution (ss7pcs)
The ss7pcs file is used to translate SS7 point codes to names.
It is read from the personal configuration directory.
Each line in this file consists of one network indicator
followed by a dash followed by a point code in decimal and a
node name separated by whitespace. An example is:
2-1234 MyPointCode1
Name Resolution (vlans)
The vlans file is used to translate VLAN tag IDs into names.
It is read from the personal configuration directory.
Each line in this file consists of one VLAN tag ID separated
by whitespace from a name. An example is:
123 Server-Lan
2049 HR-Client-LAN
Color Filters (Coloring Rules)
The colorfilters files contain system-wide and personal color
filters. Each line contains one filter, starting with the
string displayed in the dialog box, followed by the
corresponding display filter. Then the background and
foreground colors are appended:
# a comment
@tcp@tcp@[59345,58980,65534][0,0,0]
@udp@udp@[28834,57427,65533][0,0,0]
The global colorfilters file uses the same directory as the
global preferences file.
The personal colorfilters file uses the same directory as the
personal preferences file. It is written through the
View:Coloring Rules dialog.
If the global colorfilters file exists, it is used only if the
personal colorfilters file does not exist; global and personal
color filters are not merged.
Plugins
Wireshark looks for plugins in both a personal plugin folder
and a global plugin folder.
On UNIX-compatible systems, such as Linux, macOS, \*BSD,
Solaris, and AIX, the global plugin directory is
lib/wireshark/plugins/ (on some systems substitute lib64 for
lib) under the main installation directory (for example,
/usr/local/lib/wireshark/plugins/). The personal plugin
directory is $HOME/.local/lib/wireshark/plugins.
On macOS, if Wireshark is installed as an application bundle,
the global plugin folder is instead
%APPDIR%/Contents/PlugIns/wireshark.
On Windows, the global plugin folder is plugins/ under the
main installation directory (for example, C:\Program
Files\Wireshark\plugins\). The personal plugin folder is
%APPDATA%\Wireshark\plugins (or, if %APPDATA% isn’t defined,
%USERPROFILE%\Application Data\Wireshark\plugins).
Lua plugins are stored in the plugin folders; compiled plugins
are stored in subfolders of the plugin folders, with the
subfolder name being the Wireshark minor version number (X.Y).
There is another hierarchical level for each Wireshark plugin
type (libwireshark, libwiretap and codecs). For example, the
location for a libwireshark plugin foo.so (foo.dll on Windows)
would be PLUGINDIR/X.Y/epan (libwireshark used to be called
libepan; the other folder names are codecs and wiretap).
Note
On UNIX-compatible systems, Lua plugins (but not binary
plugins) may also be placed in
$XDG_CONFIG_HOME/wireshark/plugins, (or, if
$XDG_CONFIG_HOME/wireshark does not exist while
$HOME/.wireshark does exist, $HOME/.wireshark/plugins.)
Note that a dissector plugin module may support more than one
protocol; there is not necessarily a one-to-one correspondence
between dissector plugin modules and protocols. Protocols
supported by a dissector plugin module are enabled and
disabled in the same way as protocols built into Wireshark.
WIRESHARK_CONFIG_DIR
This environment variable overrides the location of personal
configuration files. On UNIX-compatible systems, such as
Linux, macOS, \*BSD, Solaris, and AIX, it defaults to
$XDG_CONFIG_HOME/wireshark (or, if that directory doesn’t
exist but $HOME/.wireshark does exist, $HOME/.wireshark); this
is typically $HOME/.config/wireshark. On Windows, it defaults
to %APPDATA%\Wireshark (or, if %APPDATA% isn’t defined,
%USERPROFILE%\Application Data\Wireshark). Available since
Wireshark 3.0.
WIRESHARK_DEBUG_WMEM_OVERRIDE
Setting this environment variable forces the wmem framework to
use the specified allocator backend for all allocations,
regardless of which backend is normally specified by the code.
This is mainly useful to developers when testing or debugging.
See README.wmem in the source distribution for details.
WIRESHARK_RUN_FROM_BUILD_DIRECTORY
This environment variable causes the plugins and other data
files to be loaded from the build directory (where the program
was compiled) rather than from the standard locations. It has
no effect when the program in question is running with root
(or setuid) permissions on UNIX-compatible systems, such as
Linux, macOS, \*BSD, Solaris, and AIX.
WIRESHARK_DATA_DIR
This environment variable causes the various data files to be
loaded from a directory other than the standard locations. It
has no effect when the program in question is running with
root (or setuid) permissions on UNIX-compatible systems.
ERF_RECORDS_TO_CHECK
This environment variable controls the number of ERF records
checked when deciding if a file really is in the ERF format.
Setting this environment variable a number higher than the
default (20) would make false positives less likely.
IPFIX_RECORDS_TO_CHECK
This environment variable controls the number of IPFIX records
checked when deciding if a file really is in the IPFIX format.
Setting this environment variable a number higher than the
default (20) would make false positives less likely.
WIRESHARK_ABORT_ON_DISSECTOR_BUG
If this environment variable is set, Rawshark will call
abort(3) when a dissector bug is encountered. abort(3) will
cause the program to exit abnormally; if you are running
Rawshark in a debugger, it should halt in the debugger and
allow inspection of the process, and, if you are not running
it in a debugger, it will, on some OSes, assuming your
environment is configured correctly, generate a core dump
file. This can be useful to developers attempting to
troubleshoot a problem with a protocol dissector.
WIRESHARK_ABORT_ON_TOO_MANY_ITEMS
If this environment variable is set, Rawshark will call
abort(3) if a dissector tries to add too many items to a tree
(generally this is an indication of the dissector not breaking
out of a loop soon enough). abort(3) will cause the program to
exit abnormally; if you are running Rawshark in a debugger, it
should halt in the debugger and allow inspection of the
process, and, if you are not running it in a debugger, it
will, on some OSes, assuming your environment is configured
correctly, generate a core dump file. This can be useful to
developers attempting to troubleshoot a problem with a
protocol dissector.
wireshark-filter(4), wireshark(1), tshark(1), editcap(1), pcap(3),
dumpcap(1), text2pcap(1), pcap-filter(7) or tcpdump(8)
This is the manual page for Rawshark 4.5.0. Rawshark is part of
the Wireshark distribution. The latest version of Wireshark can be
found at https://www.wireshark.org.
HTML versions of the Wireshark project man pages are available at
https://www.wireshark.org/docs/man-pages.
Rawshark uses the same packet dissection code that Wireshark does,
as well as using many other modules from Wireshark; see the list
of authors in the Wireshark man page for a list of authors of that
code..SH COLOPHON This page is part of the wireshark
(Interactively dump and analyze network traffic) project.
Information about the project can be found at
⟨https://www.wireshark.org/⟩. If you have a bug report for this
manual page, see
⟨https://gitlab.com/wireshark/wireshark/-/issues⟩. This page was
obtained from the project's upstream Git repository
⟨https://gitlab.com/wireshark/wireshark.git⟩ on 2025-08-11. (At
that time, the date of the most recent commit that was found in
the repository was 2025-08-11.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
[email protected]
2025-03-07 RAWSHARK(1)
|
HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
|