[ec2-user@ip-172-31-4-XXX ~]$ sudo useradd -m -s /bin/bash gituser [ec2-user@ip-172-31-4-XXX ~]$ sudo mkdir /home/gituser/.ssh [ec2-user@ip-172-31-4-XXX ~]$ sudo touch /home/gituser/.ssh/authorized_keys [ec2-user@ip-172-31-4-XXX ~]$ sudo chown gituser. /home/gituser/.ssh [ec2-user@ip-172-31-4-XXX ~]$ sudo chown gituser. /home/gituser/.ssh/authorized_keys [ec2-user@ip-172-31-4-XXX ~]$ sudo chmod 70