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42 lines
886 B
Plaintext
42 lines
886 B
Plaintext
---
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syntax: markdown
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tags: [tldr, linux]
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source: https://github.com/tldr-pages/tldr.git
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---
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# tshark
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> Packet analysis tool, CLI version of Wireshark.
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> More information: <https://tshark.dev/#sitemap-in-tshark---help>.
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- Monitor everything on localhost:
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`tshark`
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- Only capture packets matching a specific capture filter:
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`tshark -f '{{udp port 53}}'`
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- Only show packets matching a specific output filter:
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`tshark -Y '{{http.request.method == "GET"}}'`
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- Decode a TCP port using a specific protocol (e.g. HTTP):
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`tshark -d tcp.port=={{8888}},{{http}}`
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- Specify the format of captured output:
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`tshark -T {{json|text|ps|...}}`
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- Select specific fields to output:
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`tshark -T {{fields|ek|json|pdml}} -e {{http.request.method}} -e {{ip.src}}`
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- Write captured packet to a file:
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`tshark -w {{path/to/file}}`
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- Analyze packets from a file:
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`tshark -r {{path/to/file.pcap}}`
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