Modify the function you wrote for exercise 20 to descend all subdirectories of the named directory recursively and to find the maximum length of any filename in that hierarchy.

What will be an ideal response?

$ function maxfn2 () {
> declare -i max thisone
> argone=$1
>
> if [ ! -d "$argone" -o $# = 0 ]
> then
> echo "Usage: maxfn2 dirname"
> return 1
> fi
>
> max=0
> for fn in $(find $argone -print | xargs --max-args=1 basename)
> do
> thisone=${#fn}
> if [ $thisone -gt $max ]
> then
> max=$thisone
> fi
> done
> echo "Longest filename is $max characters."
> }