expand sv.md

distros/void/sv.md

@@ -1,12 +1,49 @@
-# Basics 
+# List Services
 
-Services display in /var/service
-sv up ssh
-sv down ssh
-sv restart ssh
+All possible services are in:
+
+> ls /etc/sv
+
+The computer only uses those in /var/service, so symbolic links are made to start and stop services.
+
+> ls /var/service
+
+# Start Services
+
+Enable the sshd service, so that ssh will work every time you boot up:
+
+> sudo ln -s /etc/sv/sshd /var/service
+
+Then start the service:
+
+> sudo sv start sshd
+
+# Stop Services
+
+Stop `mpd` with:
+
+> sudo sv stop mpd
+
+And stop it starting at startup with:
+
+> sudo rm /var/service/mpd
+
+You can also just make a file called 'down':
+
+> sudo touch /var/service/mpd/down
+
+This means you can start and stop the service without making symbolic links, but mpd will be 'down' when the computer starts.
 
 # Making a Service
 
-Look in the `/etc/sv` directory, then in the existing services' run files.
+Look in the `/etc/sv` directory, then in the existing services' 'run' files.
 You'll find a simple dash script (therefore Posix compliant).
 
+You can write your own, just stick in the shebang `#!/bin/sh`.
+
+If unsure, use `#!/bin/bash` as the first line.  When Void Linux says `sh`, it means `dash` shell, not `bash`.
+
+Confirm the shell you'll use:
+
+> ls -l $(which sh)
+