dftest - Shows display filter byte-code, for debugging dfilter
routines.
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.
filter
The display filter expression. If needed it has to be quoted.
--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.
Show how the IP protocol is filtered:
Shows how frame 150 is filtered:
dftest "frame.number == 150"
Original Author
Jan Šafránek
Contributors
Jaap Keuter