Bash shell：bash脚本示例

Posted 2023-03-11 karinto

示例1：函数、local局部变量的使用

 #!/bin/bash
 foo1=hello
 foo2=world
 echo "$foo1" //双引号里的变量转义, 输出hello
 echo \'$foo1\' //单引号里的变量不会被转义, 直接输出$foo1
 
 mcd()
     echo -n "$0 " //-n 不换行
     echo -n "$1 "
     echo "$2" //$0脚本名, $1第一个参数, 以此类推
     mkdir "$1"
     cd "$1"
     touch "$2"
 
 
 func()
     echo `date "+%F %T"`\': func() start\'
     local foo1=\'localhello\' //函数体内局部变量
     foo2=\'localworld\'
     echo -n "$foo1 "
     echo $foo2
     echo `date "+%F %T"`\': func() completed successfully\'
 
 
 
 mcd \'hello\' world
 
 echo -n "$foo1 "
 echo $foo2
 func
 echo -n "$foo1 "
 echo $foo2

执行结果：

 karinto@server:~$ ./foo
 hello
 $foo1
 ./foo hello world
 hello world
 2023-03-11 01:27:58: func() start
 localhello localworld
 2023-03-11 01:27:58: func() completed successfully
 hello localworld
 karinto@server:~$ tree
 .
 ├── foo
 └── hello
     └── world
 
 1 directory, 2 files

 

示例2：