June 2003
Beginner to intermediate
944 pages
43h 1m
English
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Name
let
Synopsis
let
expressions
Perform arithmetic as specified by one or more integer expressions. expressions consist of numbers, operators, and shell variables (which don’t need a preceding $), and must be quoted if they contain spaces or other special characters. For more information and examples, see Section 7.4 earlier in this chapter. See also expr in Chapter 3.
Examples
Both of the following examples add 1 to variable i:
let i=i+1let "i = i + 1"
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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.
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.