I. Logical judgments in shell scriptsIn the shell script, many will logically judge, judge a certain value, judge a file, or a directory, we do some action against the result of the judgment, if there is no judgment, there is no way to do some
[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
--book author Shenmon reprint please specify the source
What is a shell?
Our first shell script
Run the shell script
Part V Third lesson preview: variable in hand, shell not
- 20.1 shell script describes the- 20.2 shell script structure and executes- 20.3 date command usage- 20.4 shell the variables in the script # 20.1 shell Script Introduction- shell is a scripting language attention
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 is like the editor: everyone has their own choice and tries to defend the choice and tell you why it should be used ). Indeed, shell provides different functions, but they all implement the core concept of development decades ago.
Shell is like the editor: everyone has their own choice and tries to defend the choice (it also tells you why the choice should be used ). Indeed, s
Shell is like the editor: everyone has their own choice and tries to defend the choice (it also
What is a Shell script? The simplest explanation is that a shell script is a file that contains a series of commands. The shell reads the file and executes all the commands in the file as if the commands were entered directly into the command
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