bash list directories and number of files code example
Example 1: How to count number of files in each directory
du -a | cut -d/ -f2 | sort | uniq -c | sort -nr
Example 2: list number of files in each folder linux
find . -type d -print0 | while read -d '' -r dir; do
files=("$dir"/*)
printf "%5d files in directory %s\n" "${#files[@]}" "$dir"
done