Introduction to Unix

What is Unix? Where did it come from?
Types of Unix:
	-BSD            -Linux, FreeBSD, NetBSD, DU, Tru64
	-Sys V          -Solaris

Companies:
	-AT&T - Bell Labs
	-Compaq (DEC)
		-VMS,DEC-OSF/1,DU,Tru64
		-Alpha Processor
	-Sun Microsystems
		-Sparc Processor
		-Solaris/SunOS
	-RedHat/SUSE/Mandrake/Debian
	-Linux
	-AT&T

Filesystems/Directory structures
 / is where it all begins
 /etc	-configuration files
 /bin	-system binaries
 /usr	-files directed toward users
 /tmp	-temporary -read/write
 /usr/home

Login
	-passwords - use good password practices
Shells
	-bash
	-csh/tcsh
	-zsh
Basic commands
	-ls	 -l -a -F
	-cd
	-ps
	-kpasswd
	-du -s
	-quota -v / pigs
File Permissions
	-chmod / chgrp
	-group permissions
Xwindows/ xhost
Got root?
	-su  -super user
	-what is good for?
	-why is it bad?
Services:
	-std. daemons vs. inetd
	-what are the major services?
	-r** services
	-nfs
Logging facilities
	-be aware
Kernels/ drivers/ modules
Not Y2k, but Y-2038