Many programs, such as CUPS, samba, Canna and the like are programs that you wish to start running when the machine boots. Most operating systems have their own way of doing this. This QND guide covers how to do it in various Linux distributions, as well as FreeBSD and NetBSD.
In a pinch, one can always add a line to their /etc/rc.d/rc.local file (sometimes /usr/local/etc/rc.d, and sometimes /etc/rc.local) giving the full path to the program. For instance, if you install cannaserver from the vanilla version we provide, (see the QND Guide to Using Japanese in *nix) you could simply add the following line to ArchLinux's /etc/rc.local
However, as most distributions provide a way to more gracefully do this, it is worth learning.
at a command prompt, a dialog comes up with various services. Hitting the space bar while a particular service is hightlighted will add or remove an asterisk from it, determining whether or not it should be started at boot.
They also have a little program called chkconfig. The syntax is as follows, using sendmail as an example
chkconfig --level 35 sendmail on
To stop it from running at startup simply change the on to off. The level part of the command refers to run levels--in RH level 3 is multiuser non-graphic and level 5 is graphic.
if [ -x /etc/rc.d/rc.sendmail]; then . /etc/rc.d/rc.sendmail start fi
So, one can add a program to this. Again, going back to our cannaserver program, one can simply add the lines
if [ -x /usr/sbin/cannaserver]; then . /usr/sbin/cannaserver fi
If one looks at the file, they can see other examples. There are other ways to do it, including echoing "Starting the cannaserver" before starting it, etc.
rc-update add canna default
ArchLinux has an /etc/rc.conf file. In there is the line
DAEMONS=(!pcmcia network crond inetd)
One simply adds the daemons they want run at boot to that line. For example, if you want the sshd daemon to run at boot, change that line to read
DAEMONS=(!pcmcia network crond inetd sshd)
(Note that putting ! in front a daemon's name disables it--for example, in the default the pcmcia daemon is prefixed with a !, meaning it will not start at boot).
cd /usr/local/etc/rc.d mv canna.sh.sample canna.sh
Recently, many of the /usr/local/etc/rc.d script will have commented instructions that one should add a line to /etc/rc.conf. For example, with samba, one adds
so one should take a quick look at the .sh script to see if this is necessary.If you wish to make a custom startup script, /usr/local/etc/rc.d/ is the best place to put it. It must have the .sh ending. For example, if the program is called foo, the script would be called foo.sh The man rc(8) page gives some examples. In its simplest form it would read something like
#!/bin/sh case $1 in start) /usr/local/sbin/foo ;; stop) killall foo ;; esac
It is hoped the above will enable you to get a program to run at boot without problems.