split is a Unix utility most commonly used to split a Computer file into one or more other files.

Syntax: split (optional parameters) (incoming filename) (output filename)

The default behaviour of the split command is that it generates output files of 1000 lines in length. The files are named by appending aa , ab , ac , etc., to the output filename . Where the output filename is not supplied the default filename of x is used, e.g. xaa , xbb , etc. When a dash ( - ) is used instead of a filename, output is derived from standard input.

To join the files back together again use the cat command e.g.