imagemagic
find . -name '*.jpg' -printf "mv %p %h/%TY-%Tm-%Td+%TH:%TM:%TS_%f\n" | sh
find . -maxdepth 1 -iname "*.jpg" | xargs -L1 -I{} mogrify -resize 1067x800 "{}" "{}"
find . -maxdepth 1 -iname "*.jpg" | xargs -L1 -I{} mogrify -resize 1067x800 "{}" _resized/"{}"
ls -1 *.jpg | xargs mogrify -strip