linux: added ly display manager

wiki/linux/display_managers.md

@@ -9,6 +9,7 @@ The following display managers are featured in this wiki.
 
 - [LightDM](/wiki/linux/lightdm.md) is a lightweight GUI display manager.
 - [Lemurs](/wiki/linux/lemurs.md) is a lightweight TUI display manager.
+- [Ly](/wiki/linux/ly.md) is a lightweight display manager with consolue UI.
 
 ## Use `xinitrc` as `xsession`
 

wiki/linux/ly.md

@@ -0,0 +1,26 @@
+# Ly
+
+[Ly](https://github.com/fairyglade) is a lightweight console UI
+[display manager](/wiki/linux/display_managers.md).
+
+## Setup
+
+On most linux distributions Ly can be installed with the `ly` package.
+
+This setup needs an executable `~/.xinitrc` file.
+If you are not sure about it, use the tests provided in the penultimate step.
+
+Before finishing the setup the functionality should be tested.
+This can be done by using one or both of the following commands. 
+
+```sh 
+systemctl start ly.service
+```
+
+Finally the [SystemD](/wiki/linux/systemd.md) Ly service needs to be enabled and reboot the
+system.
+
+```sh 
+systemctl enable ly.service`
+reboot
+```