split(1) - split a file into pieces
-a, --suffix-length=N
       use suffixes of length N (default 2)
-b, --bytes=SIZE
       put SIZE bytes per output file
-C, --line-bytes=SIZE
       put at most SIZE bytes of lines per output file
-d, --numeric-suffixes
       use numeric suffixes instead of alphabetic
-e, --elide-empty-files
       do not generate empty output files with `-n'
       write to shell COMMAND; file name is $FILE
-l, --lines=NUMBER
       put NUMBER lines per output file
-n, --number=CHUNKS
       generate CHUNKS output files.  See below
-u, --unbuffered
       immediately copy input to output with `-n r/...'
       print a diagnostic just before each output file is opened
--help display this help and exit
       output version information and exit