ubuntu18.04 server root automatic login and allow remote root

A root automatic login

First automatic login user specified

sudo vim /etc/systemd/system/getty.target.wants/[email protected]

Then set free password

sudo vim /etc/passwd

The root: x: 0: 0: root: / root: / bin / bash in the x removed, namely: root :: 0: 0: root: / root: / bin / bash, if you want to specify other users can find row corresponding to the user name on the first row.

 

Two root allow ssh remote login

sudo vim / etc / ssh / sshd_config, find PermitRootLogin without-password changed to PermitRootLogin yes

service ssh restart