---
syntax: markdown
tags: [tldr, common]
source: https://github.com/tldr-pages/tldr.git
---
# dumpcap

> A network traffic dump tool.
> More information: <https://www.wireshark.org/docs/man-pages/dumpcap.html>.

- Display available interfaces:

`dumpcap --list-interfaces`

- Capture packets on a specific interface:

`dumpcap --interface {{1}}`

- Capture packets to a specific location:

`dumpcap --interface {{1}} -w {{path/to/output_file.pcapng}}`

- Write to a ring buffer with a specific max file limit of a specific size:

`dumpcap --interface {{1}} -w {{path/to/output_file.pcapng}} --ring-buffer filesize:{{500000}} --ring-buffer files:{{10}}`
