Templating

Finit comes with rudimentary support for templating, similar to that of systemd. Best illustrated with an example:

$ initctl show avahi-autoipd@
service avahi-autoipd:%i {
    description = "ZeroConf for %i"
    command     = "avahi-autoipd --syslog %i"
}

To enable ZeroConf for, e.g., eth0, use

$ initctl enable avahi-autoipd@eth0.conf

The enabled symlink will be set up to avahi-autoipd@.conf and every instance of %i will be replaced with eth0 before the file is parsed, so it works in the block title, in any value, and in the command line alike. Inspect the result with initctl show avahi-autoipd:eth0, and check a running instance with:

$ initctl status avahi-autoipd:eth0
     Status : running
   Identity : avahi-autoipd:eth0
Description : ZeroConf for eth0
     Origin : /etc/finit.d/enabled/avahi-autoipd@eth0.conf
Environment : -/etc/default/avahi-autoipd-eth0
    Command : avahi-autoipd $AVAHI_AUTOIPD_ARGS eth0
   PID file : /run/avahi-autoipd.eth0.pid
        PID : 4190
       User : root
      Group : root
     Uptime : 24 sec
   Restarts : 0 (0/10)
  Runlevels : [---2345-789]
     Memory : 20.0k
     CGroup : /system/avahi-autoipd@eth0 cpu 0 [100, max] mem [0, max]
              └─ 4190 avahi-autoipd: [eth0] bound 169.254.1.9  

Jul  8 11:51:42 infix-c0-ff-ee finit[1]: Starting avahi-autoipd:eth0[4190]