# shell

**Repository Path**: cpu_code/shell

## Basic Information

- **Project Name**: shell
- **Description**: shell 编程
- **Primary Language**: Shell
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 1
- **Created**: 2020-08-01
- **Last Updated**: 2021-08-24

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

<!--
 * @Author: cpu_code
 * @Date: 2020-07-27 19:11:10
 * @LastEditTime: 2020-07-30 19:44:46
 * @FilePath: \shell\README.md
 * @Gitee: [https://gitee.com/cpu_code](https://gitee.com/cpu_code)
 * @Github: [https://github.com/CPU-Code](https://github.com/CPU-Code)
 * @CSDN: [https://blog.csdn.net/qq_44226094](https://blog.csdn.net/qq_44226094)
 * @Gitbook: [https://923992029.gitbook.io/cpucode/](https://923992029.gitbook.io/cpucode/)
--> 


# shell


简介 : shell 编程


## 目录


-------------------

## [first](first)

-   [x] [echo__输出信息](first/echo.sh)
-   [x] [echo_parameter__输出参数](first/echo_parameter.sh)
-   [x] [declare__数字差异](first/declare.sh)
-   [x] [firstscript__环境参数输出](first/firstscript.sh)
-   [x] [read__读数](first/read.sh)

-----------------

## [variable](variable)

-   [x] [num__变量](variable/num.sh)
-   [x] [readonly__只读变量](variable/readonly.sh)
-   [x] [export__环境变量](variable/export.sh)
-   [x] [variable_exists__变量是否存在](variable/variable_exists.sh)
-   [x] [string__字符串操作](variable/string.sh)

---------------------

## [preset](preset)

-   [x] [preset_variables__预设变量](preset/preset_variables.sh)
-   [x] [check_execution__检查执行结果](preset/check_execution.sh)
-   [x] [quotation_marks__引号操作](preset/quotation_marks.sh)
-   [x] [paraphrase__转义字符](preset/paraphrase.sh)
-   [x] [command_sequence__命令序列](preset/command_sequence.sh)

-------------

## [test_file](test_file)

-   [x] [file_status__文件状态](test_file/file_status.sh)

---------

## [test_string](test_string)

-   [x] [compare_strings__比较字符串](test_string/compare_strings.sh)

---------

## [test_num](test_num)

-   [x] [compare_num__比较数](test_num/compare_num.sh)

---------

## [if](if)

-   [x] [if_then__判断](if/if_then.sh)
-   [x] [if_else__判断文件是否存在](if/if_else.sh)
-   [x] [checkdir__判断是否为目录](if/checkdir.sh)
-   [x] [checkdir_read__读是否为目录](if/checkdir_read.sh)
-   [x] [password__判断密码](if/password.sh)


---------

## [case](case)

-   [x] [date__选择日期](case/date.sh)
-   [x] [choice__选择对错](case/choice.sh)
-   [x] [case__选择数](case/case.sh)

---------

## [for](for)

-   [x] [file_attributes__文件属性](for/file_attributes.sh)
-   [x] [sum__循环求和](for/sum.sh)
-   [x] [sum2__循环求和](for/sum2.sh)
-   [x] [for__循环求和](for/for.sh)
-   [x] [checkdirall__检查是否目录](for/checkdirall.sh)

---------

## [while](while)

-   [x] [while__循环](while/while.sh)
-   [x] [passwordwhile__循环输入密码](while/passwordwhile.sh)

---------

## [until](until)

-   [x] [until__反循环](until/until.sh)

---------

## [function](function)

-   [x] [fun__调用](function/fun.sh)
-   [x] [add__调用函数](function/add.sh)
-   [x] [test__调用add](function/test.sh)
-   [x] [function__调用](function/function.sh)