Add example of an OpenBSD daemon

examples/openbsd_service

@@ -0,0 +1,33 @@
+#!/bin/ksh
+
+daemon="/usr/local/bin/ssh-chat"
+daemon_logger="daemon.info"
+daemon_flags="--verbose --bind ':PORT' --identity PRIVATE_KEY --admin=ADMIN_FILE --motd=MOTD_FILE"
+daemon_user="USER"
+
+. /etc/rc.d/rc.subr
+
+rc_bg=YES
+rc_reload=NO
+
+rc_cmd $1
+
+# 1. Copy this file to `/etc/rc.d` and make sure it's executable.
+#    $ cp ssh-chat/examples/openbsd_service /etc/rc.d/ssh_chat
+#    $ chmod +x /etc/rc.d/ssh_chat
+#
+# 2. Point the variable `daemon` to the executable, e.g., /usr/local/bin/ssh-chat
+#    $ ln -s ~/ssh-chat/ssh-chat /usr/local/bin/ssh-chat
+#
+# 3. Modify the values in daemon_flags and daemon_user based on your liking.
+#    Alternatively, you can delete that line and set the flags using rcctl instead:
+#    $ rcctl set ssh_chat flags --verbose --bind [...] --identity [...]
+#
+# 4. Create the user that will run this service (see `man useradd` or `man adduser`)
+#    $ useradd -m chat
+#
+# 5. Enable and start the service
+#    $ rcctl enable ssh_chat
+#    $ rcctl start ssh_chat
+#
+# 6. Check the logs in `/var/log/daemon`