LinuxWorld: Linux printing made easy: Part 4 - Configuring cupsd -- the CUPS daemonDec 22, 2000, 00:20 (0 Talkback[s])
(Other stories by Joshua Drake)
"The cupsd daemon is the heart of CUPS. It listens on port 631 and handles all initial communication with a client. When I began this series, I was going to cover the text-based, getting-your-hands-dirty version of configuring CUPS. I have since decided that many HOWTO articles make users' lives unnecessarily difficult. I also believe that when you make HOWTO documents based on a general command-line-oriented configuration, you give new users, or potential new users, an inaccurate view of the emerging ease of Linux."
"That said, we are going to use the cupsd configurator that comes with the kups configuration software. At this point, if you have not done so, I strongly suggest reading the previous articles in this series."
"To start the cupsd configurator, you must be able to write to the /etc/cups/cupsd.conf file. That file's most frequent owner is the root user. If you don't want to log out of your normal shell, you can open a console and use the su command."