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Title: Execute telnet from a script Author: Sandro Tosi Last modified: 2005-02-11 You may think that telnet, due to it's an interactive process, could not be executed in an automatic, not-interactive script. You're wrong. Actually, it is possible, doing so: # (sleep 3; echo username; sleep 3; echo password; \ sleep 5; echo "ls -l"; sleep 3; echo "exit") | telnet hostname The sleep commands are needed to let telnet ``process'' the command sent. This creates a security hole as your userid and password for the remote system are written the script. So the script must only be readable by the owner. Luckily, the "echo" commands do not appear to be visible if you do ``ps'', but this may not be true for all Unices.