partial downloading from https://raw.pixls.us/

[edit] - This was just me playing around, please use rsync.

Using wget:

wget --no-parent --recursive -nd -R *.html* https://raw.pixls.us/data/Pentax/
option info
--no-parent doesn’t ascend to parent directory
--recursive recursively enter directories
--nd files saved to current directory (no sub-directories)
-R reject files with this pattern *.html*