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Change key login to root password login in Ubuntu.

#Ubuntu189
AI Translation
This post is translated from Chinese into English through AI.View Original
AI-generated summary
Switch to root user, edit sshd_config file, change PermitRootLogin and PasswordAuthentication parameters, set root password, restart ssh service. Use commands such as sudo -i, vim /etc/ssh/sshd_config, passwd, systemctl restart ssh. Use X to delete #, W to move cursor to next word, DW to delete word after cursor, A to enter edit mode, esc to exit edit mode, / + string to search. Save and exit with :wq command.

Switch to the root user:

sudo -i

Edit the configuration file:

vim /etc/ssh/sshd_config

Modify the parameter:

Change "no" after PermitRootLogin to "yes"

Modify the parameter:

Change "no" after PasswordAuthentication to "yes"

Set the root password:

passwd

Restart the ssh service:

systemctl restart ssh

Note: X=delete the # sign, W=move the cursor to the next word, DW=delete the word after the cursor, A=enter edit mode, esc=exit edit mode, slash "/" + string=find
After editing, enter :wq to save and exit, then restart the ssh service

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