Hmm, when I left work yesterday, the system was connected to the network. When I get here today, the system is not connected to the network. /etc/netstart does nothing, if that is even the right thing to try. Any help?
You usually have to follow that with a switch:
As for su, the way Gentoo handles it is that a user needs to be part of a specific group, wheel, in order to use. If the user isn't in that group, running su will return command not found, or something of the sort. That's only if your distro supports it, and it may be a different term.
Another question: are programs actually "installed" on the system or are they basically just placed on the system and once they are there you just run them? If it is the latter, do you just delete the program file to "uninstall" it? Also if it is the latter, how many different places are programs placed in? I know of /bin /sbin and /usr/sbin - any others?
Programs aren't installed per se. The files need to run the program are copied to the drive, and once it's there, you're good to go. When you want to remove it you delete the files. Package managers help keep things in order and handle a lot of the trickier things for you. Again, if your distro supports it.