recursive move all files in child folders to parent folder and delete child folder

move children to parent

#!/bin/bash

for dir in *; do 
    if test -d "$dir"; then  
    ( 
      cd "$dir"; 
      find . -maxdepth 1 -type f -print0 | xargs -0 -I {} mv {} ../{} 
    ); 
  rmdir "$dir"; 
  fi; 
done