tshark:tldr:b0a83

The command tshark -d tcp.port==${8888},${http} is used to capture network traffic using the "tshark" protocol analyzer tool.

Here's a breakdown of the command:

• tshark: This is the command-line interface for Wireshark, a widely-used network protocol analyzer. Tshark allows you to capture and analyze network traffic.

• -d tcp.port==${8888},${http}: This option specifies the display filter to be applied during the capture.

  • tcp.port==${8888}: This filter captures network traffic on TCP port 8888. It filters out any packets that are not using this specific port. You can replace ${8888} with any other port number you want to capture. The double equals sign == is used to specify an exact match for the port number.

  • ,${http}: This is an additional filter that can be specified after the port filter. In this case, ,${http} filters out any packets that are not using the HTTP protocol (hypertext transfer protocol). You can replace ${http} with other protocol filters like telnet, ftp, etc. The comma , is used to separate multiple filters.

Overall, this command captures network traffic on a specific TCP port (8888) and filters out packets that are not using the HTTP protocol.