DFTEST(1) DFTEST(1)
NAME
dftest - Shows display filter byte-code, for debugging dfilter
routines.
SYNOPSIS
dftest [ <filter> ]
DESCRIPTION
dftest is a simple tool which compiles a display filter and shows its
bytecode. Please refer to doc/README.display_filter for a description
of the DFVM (Display Filter Virtual Machine) Byte Codes.
OPTIONS
filter
The display filter expression. If needed it has to be quoted.
DIAGNOSTIC OPTIONS
--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.
--log-debug <list>
Force the specified domains to log at the "debug" level. List of
domains must be comma-separated.
--log-noisy <list>
Force the specified domains to log at the "noisy" level. List of
domains must be comma-separated.
--log-file <path>
Write log messages and stderr output to the specified file.
EXAMPLES
Show how the IP protocol is filtered:
dftest ip
Shows how frame 150 is filtered:
dftest "frame.number == 150"
SEE ALSO
wireshark-filter(4)
AUTHORS
Original Author
Jan Šafránek
Contributors
Jaap Keuter
2023-11-17 DFTEST(1)
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