shell 脚本常用写法格式

cat optimize.sh

#!/bin/bash
function bar(){
    echo "This is bar function"
}

function foo() {
        echo "This is foo function"
}


if [ $1 == bar ];then
        bar
elif [ $1 == foo ] ;then
        foo
else
        echo     "script foo|bar" 2>&1
         exit 2
fi

运行结果:

$ ./optimize.sh foo
This is foo function

silence@USER-20211118VO MINGW64 ~/Desktop
$ ./optimize.sh bar
This is bar function

silence@USER-20211118VO MINGW64 ~/Desktop
$ ./optimize.sh falalsdfkja
script foo|bar