Окидоки. Читаем доки.
http://zsh.dotsrc.org/Guide/zshguide02.html
/etc/zshenv
Always run for every zsh.
~/.zshenv
Usually run for every zsh (see below).
/etc/zprofile
Run for login shells.
~/.zprofile
Run for login shells.
/etc/zshrc
Run for interactive shells.
~/.zshrc
Run for interactive shells.
/etc/zlogin
Run for login shells.
~/.zlogin
Run for login shells.
Первые две?