I do most of my administration of my Debian etch 4.0r1 server via SSH. I've found screen to be an invaluable program and I'd like it to be started automatically when I log into the machine locally or via SSH. I'd also like it to reattach to any existing screen sessions, if any are running.

How would I go about doing this?

I suppose if you really wanted to, you could make it your 'shell', but it'd need to be in /etc/shells or you'd need root privileges to make it so. More likely, you could just put it in your shell configs - .bashrc or .bash_profile or what have you, if bash is your shell. I wouldn't feel comfortable with such a thing, but I suppose that'd be the way to go. What's so hard about typing 'screen' or aliasing it to 's' and typing that or whatever?

As far as reattaching to sessions, the screen manual has the DdRr options. Probably
would do it.