📅 最后修改于: 2020-12-08 08:35:42 🧑 作者: Mango
在控制运算符的帮助下，您可以在命令行中输入多个命令。它有助于执行控制函数。
| Control Operator | Usage |
|---|---|
| ;semicolon | More than one command can be used in a singleline. |
| & ampersand | Command ends with & and doesn’t wait for command to finish. |
| $?dollar question mark | Used to store exit code of the previous command. |
| && double ampersand | Used as logical AND. |
| || double vertical bar | Used as logical OR. |
| Combining && and || | Used to write if then else structure in command line. |
| # pound sign | Anything written after # will be ignored. |
| \ escaping special characters |