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Linux/问题记录/Linux命令无法执行.md
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> 本文作者:丁辉
# Linux命令无法执行
**报错**`Input/output error`
> 原因: 这可能为硬盘坏道、锁死等问题导致。
**问题解决方案:**
1. 直接重启内核, 执行命令激活 "CONFIG_MAGIC_SYSRQ" 选项
```bash
echo 1 > /proc/sys/kernel/sysrq
```
2. 重启设备
```bash
echo b > /proc/sysrq-trigger
```
完美解决