creating a Linux user and adding ssh root public key

 

useradd -m ambiorixg12

cp -R /root/.ssh /home/ambiorixg12  

cd  /home/ambiorixg12/.ssh

chmod -R 755 .ssh

ssh ambiorixg12@101.10.32.13.1

method 2 just  replace the username variable

username=linux_admin;useradd -m $username && cp -R /root/.ssh /home/$username && chmod -R 755 /home/$username/.ssh

adding to the sudo group

usermod -aG sudo linux_admin

Review

id linux_adin