---
name: "tcpcapinfo"
section: "1"
platform: "linux"
package: "tcpreplay"
version: "4.6.1-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/tcpcapinfo"
---

# tcpcapinfo(1)

Pcap file dissector for debugging broken pcap files

## NAME

tcpcapinfo - Pcap file dissector for debugging broken pcap files

## SYNOPSIS

**tcpcapinfo** \[*OPTION*\]... \<pcap\_file(s)\>

## DESCRIPTION

tcpcapinfo is a tool for decoding the structure of a [pcap(3)](/pcap/3.md) 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.

## OPTIONS

- **-d**, **--dbug**=*number*

  Enable debugging output. Range: 0 to 5. Default: `0`.

  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:

**0** (EXIT\_SUCCESS)

Successful program execution.

**1** (EXIT\_FAILURE)

The operation failed or the command syntax was not valid.

**70** (EX\_SOFTWARE)

libopts had an internal operational error. Please report it to  \<autogen-users@lists.sourceforge.net\>. Thank you.

## AUTHORS

Copyright 2000-2012 Aaron Turner

Copyright 2013 Fred Klassen - AppNeta by Broadcom

For support please use the  \<tcpreplay-users@lists.sourceforge.net\> mailing list.

The latest version of this software is always available from:  \<http://tcpreplay.appneta.com/\>

## COPYRIGHT

Copyright © 2000-2012 Aaron Turner and Fred Klassen, all rights reserved. This program is released under the terms of the GNU General Public License, version 3 or later.

## BUGS

Please send bug reports to:  \<tcpreplay-users@lists.sourceforge.net\>

## NOTES

This manual page was generated from the tcpcapinfo option definitions.