Transcript UNIX History

UNIX History
 UNIX began as a research project.
 UNIX System V developed at Bell
Laboratories.
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BSD (Berkley Software Distribution) UNIX
XENIX UNIX
Sun Operating System (UNIX)
Multics in the 1960s (MIT, AT&T, Bell Labs and
GE).
UNIX Benefits
 Multi-user and Multi-tasking
 Robust Networking Environment
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Client/Server Computing
Base system for Internet and Internet
development.
Excellent platform for Web servers.
Excellent portability and scalability.
UNIX Platforms
 Engineering workstations, multi-user micro-
computers, mini-computers, mainframes, and
supercomputers.
 UNIX has grown exponentially with some 20
million computers now running some flavor of
UNIX, and over 100 million people using
these systems.
 UNIX runs on a RISC processor – large
environment – Reduced Instruction Set.
Linux Speak
 Linux first developed in 1991 by Linus
Torvalds.
 Linux was meant to be a PC version of UNIX.
 Linux runs on a CISC processor – smaller
environment – Complex Instruction Set.
 Useable free of charge.
 Copyrighted under General Public License
“GNU” = “GNU is NOT UNIX.”
Linux Flavors
 Linux does not use any proprietary code; as it
comes packaged with many executables,
making up a fully functional UNIX OS.
 Flavors include but are not limited to:
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Red Hat
Ubuntu
Knoppix (German)
Debian
Caldera
UNIX and Linux Structures
 UNIX and Linux Operating Systems are built
on a “files and file systems” methodology.
 The “root” user and file system.
 Administration of user accounts and
passwords.
 LAN/Dial-In/IP Network or Telnet
 Devices and file systems.