You have existing.zip
but want to split it into 50M sized parts.
zip existing.zip --out new.zip -s 50m
will create
new.zip
new.z01
new.z02
new.z03
....
To extract them, you should first collect the files together and run
zip -F new.zip --out existing.zip
or
zip -s0 new.zip --out existing.zip
to recreate your existing.zip
, Then you can simply
unzip existing.zip
.
https://superuser.com/questions/336219/how-do-i-split-a-zip-file-into-multiple-segments