connectnewserver.sh

#!/bin/bash

# Usage cat script.sh | ssh HOST

MAINUSER=agalan

sudo apt-get update
sudo apt-get -y install python-simplejson
sudo apt install -y openssh-server

LINE="%$MAINUSER ALL=(ALL:ALL) NOPASSWD:ALL" 
FILE=/etc/sudoers
grep -qF "$LINE" "$FILE"  || echo "$LINE" | sudo tee --append "$FILE"

sudo adduser $MAINUSER
sudo adduser $MAINUSER admin sudoers
#usermod -u 1009 ubuntu
#groupmod -g 1009 ubuntu
sudo usermod -u 1004 $MAINUSER	
sudo groupmod -g 1004 $MAINUSER
sudo mkdir -p /home/$MAINUSER/.ssh
echo "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDaWulObziluJLzVk7tmEDfkAKpCHEmp4AFvnQVhh6Yof40s2yfz1h/bMCfBstg+jLz86K99DV/tnIDtxXRx2GfGVz11l/BSuhStUDu9RKxZYN4DhMzc31/vwIWWP/P4vnJX96+JlcfF+0hbXmqfHhlcJACT7nRFuQrtVs+REAyJG/3ZuWNH1jvSKmXJYRj+CeCl0hElYtf+bF3JCEnmXl+ezUQcIXyhJ3loPhuEoGPHjHP8gZmiSjUn5SHaLkH1JPt6A/DvpxyPHdFmopL/HxFJEPxF4m5hCLleM2do3r5Owe4lmmOGgANkRLhS8b/Mmqe0mjOno9gYGYcnJ4iaPa9 $MAINUSER@neolearn" | sudo tee -a /home/$MAINUSER/.ssh/authorized_keys
sudo chmod 600 /home/$MAINUSER/.ssh/authorized_keys
sudo chown $MAINUSER:$MAINUSER  /home/$MAINUSER/.ssh/authorized_keys
sudo adduser $MAINUSER sudo
sudo service sshd restart