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# swapoff
## 说明
**swapoff命令** 用于关闭指定的交换空间（包括交换文件和交换分区）。swapoff实际上为swapon的符号连接，可用来关闭系统的交换区
## 选项
```markdown
-a：关闭配置文件“/etc/fstab”中所有的交换空间
```
## 实例
```bash
swapoff /dev/sda2 # 关闭交换分区
