Screen command set shell title to current host name

One way to do this is to use the LocalCommand feature of ssh. With this method, an escape sequence to change the terminal's title will be printed after a successful connection to a remote host.

Edit or create ~/.ssh/config to include something like:

Host *
    PermitLocalCommand yes
    LocalCommand printf '\033]0;%%s\007' '%h'

The downside of this method is that the title remains changed after logging out of the remote server. You can get around that with:

printf '\033]0;%s\007' "$(uname -n)"

If you want to automate this, you could use a function:

lssh () {
    /path/to/ssh "$@"
    printf '\033]0;%s\007' "$(uname -n)"
}

This answer assumes that your terminal emulator uses the same escape sequences as XTerm. If this is not the case, you should check the documentation for your specific terminal emulator.

One caveat in the case of GNU screen is that a single terminal window may contain several virtual windows. In that case, you could use a different escape sequence (\033k%s\033\\) to set the internal title of a single virtual window.