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yes
===
重复打印指定字符串
## 说明
**yes命令** 在命令行中输出指定的字符串，直到yes进程被杀死。不带任何参数输入yes命令默认的字符串就是y。
### 语法
```
yes(参数)
### 参数
字符串：指定要重复打印的字符串。
### 实例
[root@localhost ~]# yes testline
testline
...一直重复打印 testline，按Ctrl+C结束。
