#!/bin/bash

# preperation script for my ubuntu servers


#  ****  configuration section  ****
sshgroup="sshusers"
#user=$(cat /etc/passwd | grep 1000)
#user=${user:0:$(($(echo `expr index "$user" :`)-1))}
user="david"


#  ****  install various tools/packages  ****
pkginstall()
{

    apt-get update
    apt-get dist-upgrade -y
    apt-get install -y htop nload nmap tshark git-core \
                       curl wget dnsutils \
                       vim zsh ncdu

}


#  ****  configure motd  ****
motdconfig()
{

    rm /etc/update-motd.d/00*
    rm /etc/update-motd.d/10*
    rm /etc/update-motd.d/50*

    echo ""
    read -p "now its time to create/customize your /etc/motd.tail
(go to http://www.network-science.de/ascii/)"
    vim /etc/motd.tail

}


#  ****  ssh server config  ****
sshdconfig()
{

    echo "
       __.-._
       '-._'7'
        /'.-c
        |  /T
       _)_/LI

   this machine is
   protected by a
 master of the force!
" > /etc/issue.net

    sed -i 's/#Banner/Banner/' /etc/ssh/sshd_config
    echo "" >> /etc/ssh/sshd_config
    echo "# Restrictions added by ubuntu server prep script" >> /etc/ssh/sshd_config
    echo "AllowGroups $sshgroup" >> /etc/ssh/sshd_config
    echo "" >> /etc/ssh/sshd_config

    addgroup $sshgroup
    adduser $user $sshgroup

    read -p "add needed users to sshgroup $sshgroup in /etc/group"
    vim /etc/group

}


#  ****  start of script  ****

pkginstall
motdconfig
sshdconfig


exit 0
#  ****  end of file  ****