In this video we will discuss the following topics related to shell scripting-
1. What is shell?
A shell is special user program which provide an interface to user to use operating system services.
2. Types of shell
There are several shells are available for Linux systems like -
BASH
C Shell
Korn Shell
3. Shell scripting
Shell scripting in Linux refers to writing a program using a shell language to automate repetitive tasks. It involves writing a series of shell commands in a plain text file that can be executed as a script.
4. How to write Shell Script?
Shell script is just a simple text file with “.sh” extension, having executable permission. User can create and execute the script using following procedure
a) Open terminal.
b) vi hello.sh
c) sh hello.sh or ./hello.sh
5. Variables in Shell scripting
a) System Defined Variables
b) User Defined Variables:
c) Environment Variables:
d) Readonly Variables:
Timestamp-
00:00 Introduction
00:22 What is shell?
01:30 Types of shell
02:57 Shell scripting
05:07 How to write Shell Script?
11:53 Variables in Shell scripting
12:53 System Defined Variables
14:13 User Defined Variables
16:37 Environment Variables
19:11 Readonly Variables
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