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linuxbashscriptingtelnet

Testing a telnet connectivity for multiple servers from a file

I have a file with 10 servers (one per line) and I need to check from time to time if telnet on port 1231 is opened.

How can I do that using a bash script?

I tried to find a similar topic related to my question on other topics, but I didn't find anything.

Solution

  • If you only want to test if the port is open you can use nmap:

    $ nmap -p23 $ip

    setting ip as the IP of the server.