A UNIX OVERVIEW
BY EDWIN BAEZOTERO
HISTORY
• Developed at Bell Laboratories in 1969
• Cooperation with General Electric and
Massachusetts Institute of Technology
• Develop an Operating System that can:
• Be simple and elegant
• Written in a high level language other than
Assembly
• Allow re-use of code
CREATORS
KEN THOMPSON
DENNIS RITCHIE
Registered Trademark of The Open Group
EASE IN APPLICATION
• Kernel was written in Assembly language
• Remainder of the O/S was written in C
• Eventually the Kernel was developed in C
• Programmers produced more from the O/S
• The language was uniform with all programmers
and developers
• Made its application more practical and productive
NETWORKING
• TRANSMISSION CONTROL PROTOCOL /
INTERNET PROTOCOL (TCP/IP)
• DEVELOPED BY THE DOD
• WAS IMPLEMENTED INTO UNIX NETWORKING
• University of California at Berkley
• Major developments and application of UNIX
• SUN Microsystems
• Added NFS (Network File Systems)
POPULARITY
• Cost Effective
• Cheaper than other Operating Systems
• Network compatibility with many systems
• Communication with many systems on a network is
very reliable even over a wide area of systems
• Less code in assembly language
• Allows for a wider range of applications to be
loaded onto the respective system
INTERFACE
• Original interface was very complicated
• X-Windows, Suntools, (etc) were later developed
• UNIX is not altered but the user interface is simplified
SECURITY
• Refers to Networking
• With Hacker encounters increasing, so has the
security measures for systems and networks
• Implementation of “Open Source” code and
software
• Developed by Eric S. Raymond
• Revolutionized methods of security and enhanced
freeware for software updates or modifications
QUESTIONS