You have a big zip file and you want to upload it to a website with limited file size per upload session. So, what can yo do?
There are two options, one of them is to buy or download one of the three splitter apps like StuffIt, or you can use this command from console (You have existing.zip but want to split it into 10m sized parts:
zip existing.zip --out new.zip -s 10m
this will create
new.zip
new.z01
new.z02
new.z03
....
