"Manual" ways of getting file information

find/ls/du/File Manager/etc.
    ls *.mp3 (find . -name '*.mp3' -print is recursive)
    find . -atime +365 -print (files not accessed in a year)
    du /home/USER (how much space used in /home/USER)
        But what about files owned by USER not in /home/USER?!?
    find . -user USER -print

Windoze has dir, File Manager, etc.
    Point-n-click examples left up to Bill Gates
yadu is Perl code on steroids to do the find/ls/grep/awk/uniq/etc.
    yadu just makes it easier, especially for large number of files
    Basically just does a "find . -stat FILE" and sort EVERYTHING!