# To split file into multiple parts of 100MB each.
# Parts will be named part_aa, part_ab, ... , part_ba, part_bb, ...
split -b 100m my-huge-file.xyz part_
# To merge back files
cat part_* > my-rebuilt-huge-file.xyz
split -C 350m --additional-suffix=.log largeFile.log
$ split -l 10 data.json
split -b 53750k <your-file>
cat xa* > <your-file>