#!/bin/ksh -p

name=$USER
if [[ $1 != "" ]] ; then
    name=$1
fi

set -A heading $(df -k | head -1)
set -A info    $(df -k | grep $name)

top=5
i=0

while (( i < top )) ; do
    printf "%-12s: %s\n" ${heading[$i]} ${info[$i]}
    i=$((i+1))
done