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Why shell programming?
In Linux, although there are a variety of graphical interface tools, ghost is still a very flexible tool. Shell is not only a collection of commands, but also a very good programming language. You can use shell to automate a
Common shell: -------------- from "laruence's Linux private dish"
In the early UNIX era, there were many developers, so shell had many versions based on the developer's differences, such
Frequently heard Bourne shell (SH ),C shell,Commonly used
Turn from: The world of the Intelligence ReporterThis article combines a number of examples to illustrate how to write a shell script.Why Shell ProgrammingIn Linux systems, although there are a variety of graphical interface tools, sell is still a
Basics of Linux Shell scripting here we first talk about the shell of the basic syntax, the beginning, comments, variables and environment variables, to do a basic introduction, although not related to specific things, but lay the foundation is to
Create a scriptThere are many different shells in Linux, but usually we use Bash (Bourne again shell) for Shell programming because bash is free and easy to use. So the script I've provided in this article is all about using bash (but in most cases
1. Linux Scripting Basics
1.1 Basic Introduction to grammar
1.1.1 Start
The program must start with the following line (must be on the first line of the file):
#!/bin/sh
The symbolic #! is used to tell the system that the parameters behind it
I. Basic Shell syntax1. VariablesBy convention, Shell variables are composed of uppercase letters and underscores (_). There are two types of Shell variables:Environment VariableEnvironment variables can be transmitted from the parent process to the
--book author Shenmon reprint please specify the source
Content Introduction
Objective
What is a shell?
Our first shell script
Run the shell script
Summarize
Part V Third lesson preview: variable in hand, shell not
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