# wait

等待进程执行完后返回

## 补充说明

**wait命令** 用来等待指令的指令，直到其执行完毕后返回终端。该指令常用于shell脚本编程中，待指定的指令执行完成后，才会继续执行后面的任务。该指令等待作业时，在作业标识号前必须添加备份号"%"。

### 语法

```
wait(参数)
```

### 参数

进程或作业标示：指定进程号或者作业号。

### 实例

使用命令wait等待作业号为1的作业完成后再返回，输入如下命令：

```
wait %1       #等待作业号为3的作业完成
```

执行上面的指令后，将输出指定作业号的指令，如下所示：

```
find / -name password
```


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