How to configure a command to run on login, but only if through telnet

Question

I want to run a command every time I log in to my Ubuntu box, but only if I'm connecting through telnet, not if I'm logging in at the console.

Answer 1

Something like this in your .bashrc (assuming bash) should work fairly well:

if ( tty | egrep -q '\/pts\/' )
then
   echo "is a pts - remote login"
else
   echo "is not a pts - local login"
fi

You would just replace the echo's with whatever it was that you wanted to run.