March 2002
Beginner
504 pages
10h 47m
English
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Determining UNIX Versions
Before you can begin adjusting shell scripts to be portable, you need to know what the different types of UNIX are and how to tell them apart. The three major types of UNIX are
BSD (Berkeley Software Distribution)
System V
Linux
The locations of commands and the options supported by certain commands are different among these three types of UNIX. This chapter highlights some of the major differences pertaining to commands in particular.
BSD
UNIX was first developed in the 1970s at AT&T's Bell Labs. For many years it remained restricted to AT&T and a few universities. In the early 1980s, the University of California at Berkeley acquired the source code to UNIX from AT&T Bell Labs. Throughout the 1980s and into the early ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.