#一个简单的脚本#

概念

脚本简单地说就是一条条的文字命令，这些文字命令是可以看到的（如可以用记事本打开查看、编辑），脚本程序在执行时，是由系统的一个解释器，将其一条条的翻译成机器可识别的指令，并按程序顺序执行。因为脚本在执行时多了一道翻译的过程，所以它比二进制程序执行效率要稍低一些。

一个简单的脚本

Hi@DESKTOP-ONU36VQ MINGW64 ~
$ mkdir ~/local

Hi@DESKTOP-ONU36VQ MINGW64 ~
$ cd ~/local

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ touch demo.txt

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ start demo.txt

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ cd ~/Desktop

Hi@DESKTOP-ONU36VQ MINGW64 ~/Desktop
$ sh ~/local/demo.txt

Hi@DESKTOP-ONU36VQ MINGW64 ~/Desktop
$ cd ~/local; pwd
/c/Users/Hi/local

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ touch ~/.bashrc

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ start ~/.bashrc

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ source ~/.bashrc

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ mv ~/local/demo.txt ~/local/demo

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ start demo

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ cd ~/Desktop

Hi@DESKTOP-ONU36VQ MINGW64 ~/Desktop
$ demo yyy

Hi@DESKTOP-ONU36VQ MINGW64 ~/Desktop
$ cd ~/local/demo
bash: cd: /c/Users/Hi/local/demo: Not a directory

Hi@DESKTOP-ONU36VQ MINGW64 ~/Desktop
$ cd ~/local

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ start demo

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ cd ~/Desktop

Hi@DESKTOP-ONU36VQ MINGW64 ~/Desktop
$ demo ttt

解释

###### *//创建一个local文件（在Hi里面-这是我的电脑的默认文件名）*

Hi@DESKTOP-ONU36VQ MINGW64 ~
$ mkdir ~/local

###### *//进入local文件*

Hi@DESKTOP-ONU36VQ MINGW64 ~
$ cd ~/local

###### *//创建一个demo文本文档*

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ touch demo.txt

------

###### *//开始在demo文本文档里面编写内容*

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ start demo.txt

###### （*demo.txt里面的内容：）*

mkdir $1 
cd $1
mkdir css js
touch index.html css/style.css js/main.js
exit

------

###### *测试*--在桌面创建一个demo

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ cd ~/Desktop

Hi@DESKTOP-ONU36VQ MINGW64 ~/Desktop
$ sh ~/local/demo.txt

------

###### *将 ~/local 添加到 PATH 里*

###### *复制路径备用*

Hi@DESKTOP-ONU36VQ MINGW64 ~/Desktop
$ cd ~/local; pwd
/c/Users/Hi/local

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ touch ~/.bashrc

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ start ~/.bashrc

export PATH="local的绝对路径:$PATH"

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ source ~/.bashrc

------

###### *将dome.txt的后缀删掉*

Hi@DESKTOP-ONU36VQ MINGW64 ~/local
$ mv ~/local/demo.txt ~/local/demo

------

###### *测试*

Hi@DESKTOP-ONU36VQ MINGW64 ~/Desktop
$ demo yyy