Raspberry Pi Message of the Day mod

00-header

#!/bin/sh
#
#    00-header - create the header of the MOTD
#    Copyright (c) 2013 Nick Charlton
#    Copyright (c) 2009-2010 Canonical Ltd.
#
#    Authors: Nick Charlton <hello@nickcharlton.net>
#             Dustin Kirkland <kirkland@canonical.com>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License along
#    with this program; if not, write to the Free Software Foundation, Inc.,
#    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

[ -r /etc/lsb-release ] && . /etc/lsb-release

if [ -z "$DISTRIB_DESCRIPTION" ] && [ -x /usr/bin/lsb_release ]; then
        # Fall back to using the very slow lsb_release utility
        DISTRIB_DESCRIPTION=$(lsb_release -s -d)
fi

figlet -c -w 50 $(hostname)

printf "\n"
printf "Welcome to %s (%s).\n" "$DISTRIB_DESCRIPTION" "$(uname -r)"
printf "\n"

10-sysinfo

#!/bin/bash
#
#    10-sysinfo - generate the system information
#    Copyright (c) 2013 Nick Charlton
#
#    Authors: Nick Charlton <hello@nickcharlton.net>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License along
#    with this program; if not, write to the Free Software Foundation, Inc.,
#    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

date=`date`
load=`cat /proc/loadavg | awk '{print $1}'`
root_usage=`df -h / | awk '/\// {print $(NF-1)}'`
memory_usage=`free -m | awk '/Mem:/ { total=$2 } /buffers\/cache/ { used=$3 } END { printf("%3.1f%%", used/total*100)}'`
swap_usage=`free -m | awk '/Swap/ { printf("%3.1f%%", "exit !$2;$3/$2*100") }'`
users=`users | wc -w`
time=`uptime | grep -ohe 'up .*' | sed 's/,/\ hours/g' | awk '{ printf $2" "$3 }'`
processes=`ps aux | wc -l`
ip=`ifconfig $(route | grep default | awk '{ print $8 }') | grep "inet addr" | awk -F: '{print $2}' | awk '{print $1}'`
totalMemory=`df -h | grep "/dev/root" | awk {'print $2'}`
usedMemory=`df -h | grep "/dev/root" | awk {'print $3'}`

COL='\033[1;34m' # Color
NC='\033[0m' # No Color

printf "System load:\t${COL}%s${NC}\tIP Address:\t${COL}%s${NC}\n" $load $ip
printf "Memory usage:\t${COL}%s${NC}\tSystem uptime:\t${COL}%s${NC}\n" $memory_usage "$time"
printf "Memory Usage:\t${COL}%s${NC}\tSwap usage:\t${COL}%s${NC}\n" $root_usage $swap_usage
printf "Total Memory:\t${COL}%s${NC}\tUsed Memory:\t${COL}%s${NC}\n" $totalMemory $usedMemory
printf "Local Users:\t${COL}%s${NC}\tProcesses:\t${COL}%s${NC}\n" $users $processes

echo
# /usr/lib/update-notifier/apt-check --human-readable
# /usr/lib/update-notifier/update-motd-reboot-required
# echo

20-pihole

#!/bin/bash
#
#    20-pihole - generate information about PiHole
#    Copyright (c) 2017 Matt Nohr
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License along
#    with this program; if not, write to the Free Software Foundation, Inc.,
#    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

stats=$(curl -s localhost/admin/api.php)
domains_blocked=$(echo "$stats" | jq .domains_being_blocked)
percent_blocked=$(echo "$stats" | jq .ads_percentage_today)
queries_today=$(echo "$stats" | jq .dns_queries_today)
blocked_today=$(echo "$stats" | jq .ads_blocked_today)

COL='\033[0;36m' # Color
NC='\033[0m' # No Color

printf "PiHole Status:\n\n"

pihole status | cut -c5-

printf "Blocked:\t${COL}%s%%${NC}\tTotal Domains:\t${COL}%s${NC}\n" $percent_blocked $domains_blocked
printf "Queries Today:\t${COL}%s${NC}\tBlocked Today:\t${COL}%s${NC}\n" $queries_today $blocked_today

echo

90-footer

#!/bin/sh
#
#    90-footer - write the admin's footer to the MOTD
#    Copyright (c) 2013 Nick Charlton
#    Copyright (c) 2009-2010 Canonical Ltd.
#
#    Authors: Nick Charlton <hello@nickcharlton.net>
#             Dustin Kirkland <kirkland@canonical.com>
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License along
#    with this program; if not, write to the Free Software Foundation, Inc.,
#    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

[ -f /etc/motd.tail ] && cat /etc/motd.tail || true

installation.sh

# install lsb-release 
sudo apt-get install lsb-release

# install figlet to enable ASCII art
sudo apt-get install figlet

# create directory
mkdir /etc/update-motd.d/

# change to new directory
cd /etc/update-motd.d/

# create dynamic files
touch 00-header && touch 10-sysinfo && touch 90-footer

# make files executable
chmod +x /etc/update-motd.d/*

# remove MOTD file
rm /etc/motd

# symlink dynamic MOTD file
ln -s /var/run/motd /etc/motd