# Linux 基础命令

## Debain
禁止系统程序修改 `/etc/resolv.cof`
```bash
# 重写make_resolv_conf方法
echo 'make_resolv_conf() { :; }' > /etc/dhcp/dhclient-enter-hooks.d/leave_my_resolv_conf_alone
chmod 755 /etc/dhcp/dhclient-enter-hooks.d/leave_my_resolv_conf_alone

# 改为只读
chattr +i /etc/resolv.conf
```