Finding empty directories UNIX

Question

I need to find empty directories for a given list of directories. Some directories have directories inside it.

If inside directories are also empty I can say main di

Answer 1

This recursive function would seem to do the trick:

# Bash
findempty() {
    find ${1:-.} -mindepth 1 -maxdepth 1 -type d | while read -r dir
    do
        if [[ -z "$(find "$dir" -mindepth 1 -type f)" ]] >/dev/null
        then
            findempty "$dir"
            echo "$dir"
        fi
    done
}

Given this example directory structure:

    .
    |-- dir1/
    |-- dir2/
    |   `-- dirB/
    |-- dir3/
    |   `-- dirC/
    |       `-- file5
    |-- dir4/
    |   |-- dirD/
    |   `-- file4
    `-- dir5/
        `-- dirE/
            `-- dir_V/

The result of running that function would be:

    ./dir1
    ./dir5/dirE/dir_V
    ./dir5/dirE
    ./dir5
    ./dir2/dirB
    ./dir2

which misses /dir4/dirD. If you move the recursive call findempty "$dir" after the fi, the function will include that directory in its results.