June 2003
Beginner to intermediate
944 pages
43h 1m
English
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Name
readonly
Synopsis
readonly [options] [variable1
variable2...]Prevent the specified shell variables from being assigned new values. Variables can be accessed (read) but not overwritten.
Options
- -a
Treat the following names as array variables.
- -f
Treat the following names as functions and set them read-only so that they cannot be changed.
- -p
Display all read-only variables (default).
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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.