More than one user can be logged into a single computer at a time. This is a nice feature for the currently popular thin-client model that relies heavily on a central high capacity computer to host services and provide the processing power.
Multi-process
True
preemptive multi-tasking enables the operating system core to
efficiently juggle several running programs at once. This is
important for providing multiple services on one computer.
Multi-platform
Linux
currently runs on Intel (or equivalent) based PC's, Digital/Compaq
Alpha, PowerPC-based (Apple Macintosh), Sun Sparc, Amiga,
StrongARM-based computers, many PDA’s and has recently been
successfully ported to the S390 main frame, and larger projects such
as super-computers and clusters are planned by certain academic
organisations for the likes of environmental/ocean modeling. Tight
budget constraints and the easy access to source code make Linux a
clear, favourable choice.
Interoperable
Linux interfaces with most network protocol and
operating systems and file structures, including MS windows and NT,
Unix, Novell, and Mac OS.
Scalable
As your computing
needs grow, you can rely on Linux to grow with you. The Linux kernel
is currently scalable to four processors, with a great deal of
development taking place to increase this.
Portable
Linux is mostly
written in the C programming language. C is a mid-level language,
created specifically for writing system-level software that can be
readily ported to new computer hardware.
Flexible
The Linux operating
system can be configured as required: A desktop workstation for an
office, a home PC for games and word-processing and internet browsing
or just as easily a company Web/FTP/print server or a network
router/firewall or part of a corporate cluster. Most distributions
already include these facilities and just need them selected.
Stable
Like its Unix
ancestor Linux has achieved a reputation for stability unmatched by
any other operating system. Most computers running Linux only ever
need to be stopped for hardware changes. It is not uncommon for Linux
computers to run for several years between downtime
Efficient
The modular design
of Linux enable the configuration of just the components needed to
run the desired services. Older computers, 486 and even 386 can
become useful again. E.G. the use of a 386 PC configured just as a
network router/firewall.
Free
The Kernel is the
property of Linus Torvalds, but Linux is developed by enthusiasts in
their own time, striving for purity and functionality. Although some
companies do package and sell tailored distributions, It is possible
to obtain Linux distributions for no exchange of money and in the
case of Linux you do not necessarily get what you pay for. There is
an active Linux community only to ready to help a newcomer. Charities
and the third world may be very interested in Linux because of
this.
A
note by Chris Tyler