#!/bin/bash
# Kyle Christensen
# (KrON@EFnet)
# mute@snip.net
# Partially Stolen from cracksmoking da5id
# Mad Props to NinjaCodr For debugging / learning me in bash ;)
# Greets to twiztah too, who was the one who brought to my attention
# the tmpraces in the old one..
# Despite recent events i still luff him :P
#
# Installation:
#  cp fd /bin/ 
#  and in your ~/.bashrc -> alias df="fd"
#  
# Note: I excluded cdrom's from the totals.. It's sorta pointless..
# Also this is made for ext2 cuz its based on 1024 cylinders..  
# On Digital Unix you could replace size=1024 to size=512
#
# 1/15/99: Hacked in 'human readable' summaries at the bottom! 
# Please mail me if its messed up, I only have gigs free so it's hard to tell ;)
# 3/16/00 Be sure to peep line 64 to check the excluded filesystem types 
#
devpts=1
count=1
size=1024
total1=0
total2=0
total3=0
prog="df -Pxshm"

for amt1 in `$prog |grep -v Used | grep % | awk '{print $2}'`
 do
  total1=`expr $amt1 + $total1`
 done

for amt2 in `$prog |grep -v Used | grep % | awk '{print $3}'`
 do
  total2=`expr $amt2 + $total2`
 done

for amt3 in `$prog |grep -v Used | grep % | awk '{print $4}'`
 do
  total3=`expr $amt3 + $total3`
 done

total1=`expr $total1 / $size`
total2=`expr $total2 / $size`
total3=`expr $total3 / $size`

while [ $count -lt 4 ]
 do
  total=\$total${count}
  tmp=`eval echo $total`
   if [ $tmp -ge 1024 ]; then
    tmp=`expr $tmp / 1024`.`expr $tmp \* 10 / 1024 % 10`
    eval "total${count}=${tmp}G"
   elif [ $tmp -ge 1 ]; then
    eval "total${count}=${tmp}M"
   else
    eval "total${count}=${tmp}K"
   fi
   count=`expr $count + 1`
 done

echo "" 
$prog -mTh -x iso9660 -x proc -x shm -x devpts
echo "" 
echo "           Total: $total1  Used: $total2  Free: $total3"
echo ""