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