Question
I am looking for a simple command line tool to open TCP/UDP server/client on a desired port on a Linux machine. Are there any applications or commands that I can use to achieve this?
Answer
The nc (netcat) command will probably do what you need. It can listen on a specified port for TCP or UDP connections, and can also make outbound connections, depending on the command line arguments you specify.
If that’s not what you’re looking for, let me know.
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