Intro to UNIX

Some History

Mid- to Late-60'sInitial development @ Bell Labs
'711st Edition
'73Rewritten in C. Portable
'75Available outside Bell Labs, including UC Berkeley
'70s-'80sMany versions, e.g., Sys V, BSD 4.2, SunOS, HP-UX, Ultrix, etc.
'84100,000 installations around the world
BSD 4.2, including TCP/IP
beginnings of GNU
'86250,000 installations
'87750,000 installations
'91Linus Torvalds begins work on Linux kernel
'94Separation of code streams (proprietary vs not)
'9930th Anniv of UNIX; Linux 2.2


Alyce Brady, Kalamazoo College