Just for fun, a little script to show a colored output of df

prettydf.sh

#! /bin/bash

## Just for fun, a little script to show a colored output of df
## to get a prettier view of disk usage

HIGH=80
MEDIUM=50

FIRST=0

DEFAULT_OPTS="-h -x tmpfs -x rootfs -x devtmpfs"

if [ $# -eq 0 ]
then
	OPTIONS=$DEFAULT_OPTS
else
	OPTIONS=$*
fi

## colors
txtgrn=$(tput setaf 2) # Green
txtylw=$(tput setaf 3) # Yellow
txtred=$(tput setaf 1) # Red
txtblk=$(tput setaf 7) # White

while read line
do
	read -r system size used avail use mounted <<<"$line"
	if [ $FIRST -ne 0 ]
	then
		percent=`echo $use | sed 's/^\([0-9]*\)%$/\1/'`
		color=$txtgrn
		if [ $percent -ge $MEDIUM ]
		then
			color=$txtylw
		fi
		if [ $percent -ge $HIGH ]
		then
			color=$txtred
		fi
	else
		system="Filesystem"
		size="Size"
		used="Used"
		avail="Avail"
		percent="Use"
		mounted="Mounted"
		FIRST=1
		color=$txtblk
	fi
	echo "$system $mounted $size $used $avail ${color}$percent%${txtblk}"
done <<< "`df $OPTIONS`" | column -t