What is the difference between Linux and UNIX?
UNIX is a portable, multi-user operating system that has been
around since 1970. Linux is an operating system modeled after
UNIX that came about when Linus Torvalds joined up with Richard
Stallman's GNU project. Linus Torvalds headed a world-wide team
of engineers who developed the kernel of the operating system, while
GNU was developing utilities and applications for the operating system.
They were able to come together because they were both modeling their
work after the organization and structure defined by UNIX.
Where can I get a copy of Linux?
Many Linux books come with a free CD of Linux, so when you buy the textbook, you buy
the Operating System as well. Most major distribution vendors, like RedHat, do offer free
image files of their distributions on an FTP site. The following
website allows you access to a variety of Linux Distributions.
Where can I get ssh for my apple computer?
SSH is used to connect to remote computers in a secure way that prevents hackers from spying on the
communications going over the wire. SSH comes with Linux as part of the open source
project and is included with OS-X. You can get a version of ssh for MacOS computers at this
link.