## 更改默认登陆用户
```
root@liusiyao:~# vim /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf
[Seat:*]
user-session=ubuntu
[SeatDefaults]
autologin-user=root ##这里更改用户
user-session=ubuntu
greeter-show-manual-login=true
```
```
root@liusiyao:~# vim /root/.profile
# ~/.profile: executed by Bourne-compatible login shells.
if [ "$BASH" ]; then
if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi
fi
tty -s && mesg n || true #要添加的
```
## 关于ssh设置
```
vi /etc/ssh/sshd_config #调整PermitRootLogin参数值为yes
```
## 重启ssh服务
```
service sshd restart
```
