$ curl cheat.sh/
 cheat:split 
# To split a large text file into smaller files of 1000 lines each:
split <file> -l 1000

# To split a large binary file into smaller files of 10M each:
split <file> -b 10M

# To consolidate split files into a single file:
cat x* > <file>

 tldr:split 
# split
# Split a file into pieces.
# More information: <https://www.gnu.org/software/coreutils/split>.

# Split a file, each split having 10 lines (except the last split):
split -l 10 path/to/file

# Split a file into 5 files. File is split such that each split has same size (except the last split):
split -n 5 path/to/file

# Split a file with 512 bytes in each split (except the last split; use 512k for kilobytes and 512m for megabytes):
split -b 512 path/to/file

# Split a file with at most 512 bytes in each split without breaking lines:
split -C 512 path/to/file

$
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