Introduction to wireshark command line interface

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Introduction to wireshark command line interface

Wireshark is a popular network protocol analyzer that allows you to capture, analyze, and troubleshoot network traffic. It comes with a graphical user interface (GUI) that makes it easy to navigate and analyze network traffic. However, there is also a command-line interface (CLI) that allows you to interact with Wireshark from the command line.

The Wireshark CLI is a powerful tool that enables users to perform various network analysis tasks, such as capturing and filtering network traffic, decoding packets, exporting data, and more. Here are some common commands that you can use with Wireshark CLI:

wireshark: This command launches the Wireshark GUI.
tshark: This command launches the TShark CLI, which is a command-line version of Wireshark. TShark can capture and analyze network traffic from the command line.
-i: This option specifies the network interface to capture traffic from. For example, "tshark -i eth0" captures traffic from the Ethernet interface.
-f: This option specifies a capture filter to apply. For example, "tshark -f 'port 80'" captures only HTTP traffic.
-w: This option specifies the output file name for the captured packets. For example, "tshark -i eth0 -w capture.pcap" captures traffic from the Ethernet interface and saves it to a file named "capture.pcap".
-R: This option specifies a display filter to apply when analyzing captured packets. For example, "tshark -r capture.pcap -R 'http.request.method == GET'" displays only HTTP GET requests.
-T: This option specifies the output format for the captured packets. For example, "tshark -r capture.pcap -T json" outputs the captured packets in JSON format.

These are just some of the many commands and options available in the Wireshark CLI. The CLI can be a bit intimidating at first, but once you become familiar with the commands and options, it can be a very powerful tool for network analysis and troubleshooting.