[SATLUG] *nix command to separate binary files

[Ramon Hermida]

Gang,

I have a large binary file that I need to break into (2) files.  I know there 
is a command to do this in *nix, but I have forgotten it for the life of me.  
I have already done the obligatory google search and did not have any luck 
with it

Thanks in advance

-RH