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Linux System Programming Techniques

You're reading from Linux System Programming Techniques Become a proficient Linux system programmer using expert recipes and techniques

Product type Paperback

Published in May 2021

Publisher Packt

ISBN-13 9781789951288

Length 432 pages

Edition 1st Edition

Tools

Linux

Concepts

System Programming

Author (1):

Jack-Benny Persson

View More author details

Table of Contents (14) Chapters

Preface

1. Chapter 1: Getting the Necessary Tools and Writing Our First Linux Programs

2. Chapter 2: Making Your Programs Easy to Script FREE CHAPTER

3. Chapter 3: Diving Deep into C in Linux

4. Chapter 4: Handling Errors in Your Programs

5. Chapter 5: Working with File I/O and Filesystem Operations

6. Chapter 6: Spawning Processes and Using Job Control

7. Chapter 7: Using systemd to Handle Your Daemons

8. Chapter 8: Creating Shared Libraries

9. Chapter 9: Terminal I/O and Changing Terminal Behavior

10. Chapter 10: Using Different Kinds of IPC

11. Chapter 11: Using Threads in Your Programs

12. Chapter 12: Debugging Your Programs

13. Other Books You May Enjoy

Chapter 9: Terminal I/O and Changing Terminal Behavior

In this chapter, we learn what a TTY (short for TeleTYpewriter) and a PTY (short for Pseudo-TeletYpewriter) are and how to get information about them. We also learn how to set their attributes. Then, we write a small program that takes input without echoing the text—perfect for a password prompt. We also write a program that checks the size of the current terminal.

A terminal can take many forms—for example, a terminal window in X (the graphical frontend); the seven terminals accessed with Ctrl + Alt + F1 through F7; an old serial terminal; a dial-up terminal; or a remote terminal such as Secure Shell (SSH).

A TTY is a hardware terminal, such as the consoles accessed with Ctrl + Alt + F1 through F7, or a serial console.

A PTY, on the other hand, is a pseudo-terminal, meaning it's emulated in software. Examples of PTYs are programs such as xterm, rxvt, Konsole, Gnome Terminal, or a terminal multiplexer...

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Authors (1)

Jack-Benny Persson

Jack-Benny Persson

Jack-Benny Persson is a consultant and author based in Sweden. He has written several books about Linux and programming. His passion for Linux and other Unix-like systems started as a hobby more than 20 years ago. Since then, he has spent most of his spare time reading about Linux, tinkering with Linux servers, and writing about Linux administration. Today he has his own IT and media company in Sweden that focuses on Linux. Jack-Benny holds an Advanced Higher Vocational Education Diploma as a Linux system specialist. He has also studied electronics, networking, and security.

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