#!/bin/bash

input=user.info
root_pass=1234qwerASDF
sudo_group=sudo

hash sshpass >/dev/null 2>&1 || { echo >&2 "sshpass is required. Install via yum or apt-get."; exit 1; }

while read OS IP USER PSWD
do
    echo -e "${IP}(${OS})\tuser: ${USER}\tpassword: ${PSWD}"
    if [ "${OS}" = "centos" ]; then
        sudo_group=wheel
    fi
    sshpass -p ${root_pass} ssh -n -o StrictHostKeyChecking=no -l root ${IP} "adduser ${USER}; echo ${USER}:${PSWD} | chpasswd; usermod -aG ${sudo_group} ${USER}"
done < "${input}"