I. PrefaceShell programming is widely used in the Unix/linux world, and mastering shell programming is a must for a good unix/linux developer and system administrator. The main task of script debugging is to find out the cause of the script error
Transferred from: http://itlab.idcquan.com/linux/SHELL/727128.htmlThis paper introduces the shell script debugging technology comprehensively and systematically, including using echo, tee, trap and other commands to output key information, tracking
1. What is a shell script?It is a scripting language, not a programming language.You can use some logical judgments, loops, and other syntax.You can customize the sub-function, which is a collection of system commands.Shell scripts enable automated
I. Preface
Shell programming is widely used in the Unix/linux world, and mastering shell programming is a must for a good unix/linux developer and system administrator. The main task of script debugging is to find out the cause of the script error
[This is my own study notes, welcome reprint, but please specify the source:http://blog.csdn.net/jesson20121020]
Take a look at some of the variables in the shell today.
Variable Type:There are several variables in the shell:1) Local
Original URL: http://zhu8337797.blog.163.com/blog/static/170617549201122512712136/
Command
Options
function
BASH–X Pin Name
Echo Echo
Displays each row of the script after the variable is replaced
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
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
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