tcpcapinfo man page

tcpcapinfo — Pcap file dissector for debugging broken pcap files


tcpcapinfo [-flags] [-flag [value]] [--option-name[[=| ]value]] <pcap_file(s)>

tcpcapinfo is a tool for decoding the structure of a pcap(3) file with a focus on finding broken pcap files and determining how two related pcap files might differ.


tcpcapinfo will first print out the pcap_file_header_t in human readable form followed by a per-packet summary including the pcap_pkthdr_t and simple checksum value of the packet.


-d number, --dbug=number

Enable debugging output. This option may appear up to 1 times. This option takes an integer number as its argument. The value of number is constrained to being:

in the range  0 through 5

The default number for this option is:


If configured with --enable-debug, then you can specify a verbosity level for debugging output. Higher numbers increase verbosity.
-V, --version
Print version information.
-H, --help
Display usage information and exit.
-!, --more-help
Pass the extended usage information through a pager.

Exit Status

One of the following exit values will be returned:

Successful program execution.
The operation failed or the command syntax was not valid.
libopts had an internal operational error. Please report it to Thank you.


Copyright 2000-2012 Aaron Turner Copyright 2013 Fred Klassen - AppNeta For support please use the mailing list. The latest version of this software is always available from:


Please send bug reports to:


This manual page was AutoGen-erated from the tcpcapinfo option definitions.


19 Nov 2016 Tcpreplay Suite User Commands