Sometimes you may want to start a couple of programs just after an interactive login to your favourite shell, which in my case would be zsh.
For example - I use Emacs as daemon process (
emacs --daemon). I
cannot use an init script to start it since the daemon is usable on a
per user basis. The solution in this case is really simple - just
.zlogin file in your home folder and put in it all the
commands you want executed after you’ve logged into the shell. In my
case I put:
there and as soon as I’m logged in, the Emacs daemon is up and waiting for incoming connections.