December 2021
Intermediate to advanced
510 pages
11h 20m
English
Content preview from Powerful Command-Line Applications in GoBecome 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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Exercises
Before you move on, you should build on the skills and techniques you explored in this chapter. Here are some suggestions:
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Allow the user to provide port ranges, such as 1-1024, in addition to specific ports for scan.
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Validate the provided port numbers are within the proper range for TCP ports from 1 to 65535.
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Allow the user to execute UDP port scans in addition to TCP. Update the scan package and the command-line tool accordingly.
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Add a new flag to the scan subcommand allowing the user to specify a filter to show only open or closed ports.
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Add a new flag to the scan subcommand allowing the user to specify a custom timeout for the scan.
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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.