BIGFILE

#!/bin/bash
#t=(`ls -S $1`);echo ${t[0]}

max=0
output="not found"
for i in `ls $1`;do
        temp="$1$i"
        if [[ -f  $temp ]];then
                temp_max=`wc -c $temp`
                temp_max=($temp_max)
                temp_max=${temp_max[0]}
                if [[ $max -lt $temp_max ]];then
                        max=$temp_max
                        output=$i
                fi
        fi
done
echo "$output"