1. Write a shell script and a shell script

1. Write a shell script and a shell script

I. shell and shell scripts

In linux, the text starting with #/bin/bash is interpreted by the shell interpreter.

Shell is an application that provides an interface through which users can access the services of the operating system kernel.

Shell script is a script program written for shell. The shell mentioned in the industry usually refers to shell scripts. shell and shell script are two different concepts.

Different Versions of sh, bash, and other script interpreters are developed along the way.

Ii. Basic shell functions

1. indent

Shell scripts do not have mandatory indentation requirements for programming, which is different from python that uses indentation to implement code boundaries.

2. Variables

 

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