centos_create_users

# PLEASE REPLACE <username>, <public_key>, <admin_user>



# Add new user with sudo admin
useradd -m -d /home/<username> -s /bin/bash <username>
mkdir -p '/home/<username>/.ssh/'
touch /home/<username>/.ssh/authorized_keys
echo -n "<public_key>" >> /home/<username>/.ssh/authorized_keys
chown -R <username>:<username> /home/<username>/.ssh
chmod 700 /home/<username>/.ssh
chmod 600 /home/<username>/.ssh/authorized_keys
usermod -aG wheel <username>

# Sudo without password
# visudo
%wheel         ALL = (ALL) NOPASSWD: ALL

# Sudo su - another user without password
# visudo
<user1> ALL = (root) NOPASSWD: /bin/su - <admin_user>