RHEL (Centos/Fedora) dynamic motd

## dynmotd
#!/bin/bash

# Installation:
#
# 1.   vim /etc/ssh/sshd_config
#      PrintMotd no
#
# 2.   vim /etc/pam.d/login
#      # session optional pam_motd.so
#
# 3.   vim /etc/profile
#      /usr/local/bin/dynmotd # Place at the bottom
#
# 4.   Then of course drop this file at
#      /usr/local/bin/dynmotd
#

USER=`whoami`
HOSTNAME=`uname -n`
ROOT=`df -Ph | grep root | awk '{print $4}' | tr -d '\n'`
HOME=`df -Ph | grep home | awk '{print $4}' | tr -d '\n'`
BACKUP=`df -Ph | grep backup | awk '{print $4}' | tr -d '\n'`

MEMORY1=`free -t -m | grep "buffers/cache" | awk '{print $3" MB";}'`
MEMORY2=`free -t -m | grep "Mem" | awk '{print $2" MB";}'`
PSA=`ps -Afl | wc -l`

# time of day
HOUR=$(date +"%H")
if [ $HOUR -lt 12  -a $HOUR -ge 0 ]
then    TIME="morning"
elif [ $HOUR -lt 17 -a $HOUR -ge 12 ]
then    TIME="afternoon"
else
    TIME="evening"
fi

#System uptime
uptime=`cat /proc/uptime | cut -f1 -d.`
upDays=$((uptime/60/60/24))
upHours=$((uptime/60/60%24))
upMins=$((uptime/60%60))
upSecs=$((uptime%60))

#System load
LOAD1=`cat /proc/loadavg | awk {'print $1'}`
LOAD5=`cat /proc/loadavg | awk {'print $2'}`
LOAD15=`cat /proc/loadavg | awk {'print $3'}`

echo "
 _______  __   __  _______  _______  _______  __    _  _______  __   __  _______  _______  _______  _______
 |       ||  | |  ||   _   ||       ||       ||  |  | ||       ||  | |  ||       ||   _   ||       ||       |
 |       ||  |_|  ||  |_|  ||  _____||   _   ||   |_| ||       ||  |_|  ||   _   ||  |_|  ||_     _||    ___|
 |       ||       ||       || |_____ |  | |  ||       ||       ||       ||  | |  ||       |  |   |  |   |___
 |      _||       ||       ||_____  ||  |_|  ||  _    ||      _||       ||  |_|  ||       |  |   |  |    ___|
 |     |_ |   _   ||   _   | _____| ||       || | |   ||     |_ |   _   ||       ||   _   |  |   |  |   |___
 |_______||__| |__||__| |__||_______||_______||_|  |__||_______||__| |__||_______||__| |__|  |___|  |_______|

Good $TIME $USER"

echo "
===========================================================================
 - Hostname............: $HOSTNAME
 - Release.............: `cat /etc/redhat-release`
 - Users...............: Currently `users | wc -w` user(s) logged on
===========================================================================
 - Current user........: $USER
 - CPU usage...........: $LOAD1, $LOAD5, $LOAD15 (1, 5, 15 min)
 - Memory used.........: $MEMORY1 / $MEMORY2
 - Swap in use.........: `free -m | tail -n 1 | awk '{print $3}'` MB
 - Processes...........: $PSA running
 - System uptime.......: $upDays days $upHours hours $upMins minutes $upSecs seconds
 - Disk space ROOT.....: $ROOT remaining
 - Disk space HOME.....: $HOME remaining
 - Disk space BACK.....: $BACKUP remaining
===========================================================================
"