find /path -name 'filename'
find /path -type f
(for files), find /path -type d
(for directories)find /path -perm 0755
find /path -size +100M
(greater than), find /path -size -1k
(smaller than)find /path -mtime -7
(modified within last 7 days)find /path -type f -empty
find /path -exec command {} \;
find /path -type f -delete
Challenge: