Here is a simple Redhat Linux-compatible (chkconfig) script that you can use to start and stop instiki, and also to make it startup when your system boots (chkconfig --add instiki).
Copy this and put it into a file called: /etc/init.d/instiki
#!/bin/bash
#
# instiki Start/Stop Instiki.
#
# chkconfig: - 62 38
# description: Instiki is a ruby wiki.
#
# processname: instiki
#
# By: Ryan Dlugosz - ryan@dlugosz.net
#
# Based on freshclam init by:
# (c) 2004/05/17 Petr@Kristof.CZ under GNU GPL 2.0+
#
# Updated 4/16/2005 to accomodate instiki 0.10.0
#
Next, update the script to make sure your paths to the instiki script are correct. Finally, make the script executable (chmod +x instiki) and test it out (“service instiki start”, etc.). Oh yeah, and make sure your storage directory exists or at least can be created by Instiki itself.
I guess the storage parameter is no longer needed now that Instiki uses Active Record?
Debian Init Script
#! /bin/sh
#
# instiki WEBrick wiki server
#
# Based on:
#
# skeleton example file to build /etc/init.d/ scripts.
# This file should be used to construct scripts for /etc/init.d.
#
# Written by Miquel van Smoorenburg <miquels@cistron.nl>.
# Modified for Debian GNU/Linux
# by Ian Murdock <imurdock@gnu.ai.mit.edu>.
# Instiki modifications by Ben Armstrong <synrg@debian.org>.
#
# Version: @(#)skeleton 1.9.1 08-Apr-2002 miquels@cistron.nl
#