CDM
From ArchWiki
CDM is a minimalistic, yet full-featured replacement for login-managers like slim, kdm, gdm and qingy that provides a fast, dialog-based login system without the overhead of the X Window System or the instability of qingy. Written in pure bash, CDM has no other dependencies, yet supports multiple users/sessions and can start virtually any DE/WM.
A package is available in the AUR.
Configuration
You can configure CDM by editing /etc/cdmrc. It is fully documented and should be relatively easy to figure out.
Starting X
Login to the console and select your prefered session (or console, if allowed) from the menu.
Additional users may be logged in by switching to tty1 (ctrl+alt+f1). If the user is already logged in, CDM will automatically activate their pre-existing session.
Own commands
If you want to add entries like shutdown which needs parameters you have to save the command in an executable script and add the script with full path to the wmbinlist array. E.g. shutdown:
- /script/shutdown
#!/bin/bash shutdown -h now
- /etc/cdmrc
wmbinlist=( ... /script/shutdown ... )