how to read command line arguments in shell script

The key to using command-line arguments is that the shell script needs to interact with the person who is running the script.The bash shell provides command-line arguments to add data values after the command, command line options to modify the

Variable names can only contain numbers, letters, and underscores, because some variables that contain other characters have special meanings, and such variables are called special variables.For example, $ represents the ID of the current shell

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

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

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

Shell programming BASICS (from the UBUNTU Forum) (12:49:20) Reprinted Tags:Shell Classification: programming (C ++) Http://wiki.ubuntu.org.cn/Shell%E7%BC%96%E7%A8%8B%E5%9F%BA%E7%A1%80 Why shell programming?In Linux, although there

The difference between a point command in the shell and the source command1 shell script Execution methodsThere are two ways to execute shell scripts, one is to create a new shell, and then execute the corresponding shell scripts, one that executes

Create a scriptThere are a lot of different shells in Linux, but we usually 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

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

[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