groovicus:
if you're familiar with Windows 9x/DOS, you will know that there is a file called autoexec.bat that runs on boot. Any programs that are specified in that file run at boot. Similarly, you have the rc files in *NIX. You have at least one for each runlevel (someone correct me if I'm wrong here). They are named rc.1, rc.2,rc.3, etc. for runlevels 1,2,3, etc.
In case you don't know what runlevels are, without going into too much detail, runlevel 1 is single user mode, runlevel 3 is multiuser text mode and runlevel 5 is GUI (X Windows) mode. You can change runlevels by running the init command followed by the runlevel number (eg: init 3) as root.
Also, I asked him to put a # in front of the lines that contained yp* because that comments them out (i.e. they aren't interpreted by the OS). This is generally a better practice than deleting the line because it allows you to get things back to normal in case you mess up by just removing the # that you added rather than reconstruct the command.
Cheers,
cgkanchi
