welcome message on my raspi (based on https://www.raspberrypi.org/forums/viewtopic.php?t=23440)

.bash_profile

#!/bin/bash
let upSeconds="$(/usr/bin/cut -d. -f1 /proc/uptime)"
let secs=$((${upSeconds}%60))
let mins=$((${upSeconds}/60%60))
let hours=$((${upSeconds}/3600%24))
let days=$((${upSeconds}/86400))
UPTIME=`printf "%d days, %02dh%02dm%02ds" "$days" "$hours" "$mins" "$secs"`

# get the load averages
read one five fifteen rest < /proc/loadavg

echo "$(tput setaf 2)
   .~~.   .~~.    `date +"%A, %e %B %Y, %r"`
  '. \ ' ' / .'   `uname -srmo`
   .~ .~~~..~.
  : .~.'~'.~. :   Uptime.............: ${UPTIME}
 ~ (   ) (   ) ~  Memory.............: `awk '/MemFree/ {printf( "%.2f\n", $2 / 1024 )}' /proc/meminfo` MB / `awk '/MemTotal/ {printf( "%.2f\n", $2 / 1024 )}' /proc/meminfo` MB
( : '~'.~.'~' : ) Load Averages......: ${one}, ${five}, ${fifteen} (1, 5, 15 min)
 ~ .~ (   ) ~. ~  Running Processes..: `ps ax | wc -l | tr -d " "`
  (  : '~' :  )   IP Addresses.......: `ifconfig eth0 | grep "inet" | awk '{ print $2 }' | head -n 1` and `wget -q -O - http://icanhazip.com/ | tail`
   '~ .~~~. ~'    Free Disk Space....: `df -Pkh | grep -E '^/dev/root' | awk '{ print $4 }' | awk -F '.' '{ print $1 }'` on /dev/root (`df -Pkh | grep -E '^/dev/root' | awk '{ print $5 }'`$
       '~'
$(tput sgr0)"