MOTD for Centos / RHEL

motd.sh

#!/bin/bash


# This motd.sh file is to be placed in /etc/profile.d/ to be executed upon
# successful login. 
# -------------------------------------------------------------------------
# Copyright (c) 2018 Mike Centola (mikecentola.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 3 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.
#
# For a copy of the GPL V3, see http://www.gnu.org/licenses/.
#
# Last Updated: 2018/12/18
# -------------------------------------------------------------------------


# OS
OS="`cat /etc/redhat-release`"

# KERNEL
KERN="`uname -r`"

# IP Address
IFACE="eth0" #SET TO YOUR IFACE
IPADDR="`ip addr show $IFACE |grep -w 'inet' | awk -F' ' '{print $2}'`"

# Uptime
UPTIME="`uptime | sed 's/^.*up *//;s/, *[0-9]* user.*$/m/;s/ day[^0-9]*/d, /;s/ \([hms]\).*m$/\1/;s/:/h, /'`"

# Load Avg
LOADAVG="`cat /proc/loadavg | awk -F' ' '{print $1"(1min)  " $2"(5min)  " $3"(15min)"}'`"

# Memory Free
MEMFREE="`free -m | grep "Mem" | awk '{print $3"MB / "$2"MB" }'`"

# Root Free
ROOTFREE="`df -h / | grep "/" | awk '{ print $3 "/" $2 " ("$5")"}'`"

# Logged In Users
USRS="`users | wc -w`"

# Setting variables for ANSI colors
WHITE="\033[1;49;97m"
BLUE="\033[1;49;96m"
GREY="\033[0;90;40m"
NC="\033[0m" # NO COLOR

####### START OUTPUT #######


if [ "$(id -u)" != "0" ] && [[ ! $TERMCAP =~ screen ]]; then

echo -e "$BLUE"
cat << "EOF"
  __  __ ___ _  _____ ___ ___ _  _ _____ ___  _      _   
 |  \/  |_ _| |/ | __/ __| __| \| |_   _/ _ \| |    /_\  
 | |\/| || || ' <| _| (__| _|| .` | | || (_) | |__ / _ \ 
 |_|  |_|___|_|\_|___\___|___|_|\_| |_| \___/|____/_/ \_\
                                                         
EOF

echo -e "
$GREY=============================================================$BLUE
Welcome to $WHITE$(hostname)$BLUE

SYSTEM OS           :$WHITE $OS $BLUE
KERNEL VERSION      :$WHITE $KERN $BLUE
IP ADDR ($IFACE)    :$WHITE $IPADDR $BLUE
UPTIME              :$WHITE $UPTIME $BLUE
LOAD AVERAGE        :$WHITE $LOADAVG $BLUE
FREE MEMORY         :$WHITE $MEMFREE $BLUE
ROOT FREE           :$WHITE $ROOTFREE $BLUE
LOGGED IN USERS     :$WHITE $USRS $BLUE

You're currently logged in as $WHITE$(whoami)$GREY
=============================================================$NC"
echo

fi