filtering list results

I created a large file list using:

find . -type f -mtime +540 > test2.txt

..which searched recursively down the directory tree searching for any file older than 540 days.

I would like to filter the results removing the directory name and the "/" character, resulting in only a list of the filenames, i.e.:

directoryName/filename

changed to,

filename

I think using sed or awk would work, but not entirely sure how to proceed.

Thanks!

man basename

if you have GNU find

find . -type f -mtime +540 -printf "%f\n"

yeah, this seemed to work, thanks!

find . -type f -mtime +540 | basename */* * > fileList.txt