Command:   split - split a large file into several smaller files
Syntax:    split [-n] [file [prefix]]
Flags:     -n  Number of lines per piece (default: 1000)
Examples:  split -200 file          # Split  file  into  pieces  of  200
                                      lines each
           split file z             # Split file into zaa, zab, etc.

     Split reads file and writes it out in n-line pieces.   By  default,
the  pieces  are called xaa, xab, etc.  The optional second argument can
be used to provide an alternative prefix for the output file names.