February 2001
Beginner to intermediate
448 pages
9h 2m
English
Content preview from Korn Shell Programming by ExampleBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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What Is a Shell?
A shell is a program that enables the user to enter commands. The commands entered by the user are checked and interpreted by the shell. The shell produces a prompt (typically the $) and waits for the user to type a command.
The command might be executed within the context of a new process (for example, ls), cause some functionality within the shell program itself to execute (for example, print), or cause an error to be reported (for example, non existent_command).
If you are totally new to the shell environment, you probably are envisioning a shell covering over the critical essence of something, much like a peanut shell covers and protects the peanut. Consider the shell as a neighborhood through which you can pass to get to ...
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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.
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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.