Auto exit Telnet command back to prompt without human intervention ^] quit close exit code 1

Question

I\'m running telnet command on a host for a given port (which is open), it returns 0 (success).

For trying telnet manually, I type the following comman

Answer 1

A slight improvement to the answer provided by Matthew above which allows you to use it inside shell scripts:

$ echo -e '\x1dclose\x0d' | telnet google.com 80
Connected to google.com.
Escape character is '^]'.

telnet> close
Connection closed.
$ echo $?
0