November 2013
Intermediate to advanced
224 pages
6h 9m
English
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Documenting a Command-Line Interface
An experienced command-line user will try one or two things on the command line to
discover how to use an app: they will run it without arguments or
give it a help switch, such as -h or
--help (-help is also
a possibility because many X-Windows apps respond to this for help). In each case,
the user will expect to see a one-screen summary of
the app’s usage, including what arguments
the app accepts or requires and what options are available.
Because db_backup.rb uses OptionParser, we’re most of the way there already. Apps that use OptionParser respond to -h and --help in just the way our users expect. When OptionParser encounters either of these switches on the command line (assuming you haven’t overridden ...
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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.