You're reading from Learning Linux Shell Scripting Unleash the power of shell scripts to solve real-world problems by breaking through the practice of writing tedious code

Product type Paperback

Published in Dec 2015

Publisher

ISBN-13 9781785286216

Length 306 pages

Edition 1st Edition

Tools

Ubuntu Server

Concepts

Shell Scripting

Author (1):

Ganesh Sanjiv Naik

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Table of Contents (14) Chapters

Preface

1. Getting Started and Working with Shell Scripting FREE CHAPTER

2. Drilling Deep into Process Management, Job Control, and Automation

3. Using Text Processing and Filters in Your Scripts

4. Working with Commands

5. Exploring Expressions and Variables

6. Neat Tricks with Shell Scripting

7. Performing Arithmetic Operations in Shell Scripts

8. Automating Decision Making in Scripts

9. Working with Functions

10. Using Advanced Functionality in Scripts

11. System Startup and Customizing a Linux System

12. Pattern Matching and Regular Expressions with sed and awk

Index

User initialization scripts

Till now, we have seen different scripts, these scripts initialize the operating system, prior to the login of any user. Once the basic operating system in initialized, the user login process starts. This process is explained in the following topics.

Systemwide settings scripts

In the /etc/ folder, the following files are related to the user level initialization:

/etc/profile: Few distributions will have additional folder /etc/profile.d/. All the scripts from the profile.d folder will be executed.
/etc/bash.bashrc

The preceding scripts are called by all the users, including root and normal users. Initially, the /etc/profile script will be called. This script creates system-wide environment settings. Few distributions will have the /etc/profile.d/ folder. SuSE Linux has additional /etc/profile.local script. The scripts in this folder will also be called. Then, the /etc/bash.bachrc script will be executed.