🚀 go-pugleaf

Get the verbatimfiles.sty file from the Clarkson TeX Depository.  It
does what you want very nicely.  Here's its description:

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% verbatimfiles.sty
%
% Here is a version of Adrian's VERBATIM.STY, for inputting whole files
% verbatim, which is "more LaTeX-like" in that it uses the actual LaTeX 
% macros which set up the `verbatim' environment.
%
% As a matter  of interest, it is much nicer for TeX if you input large
% quantities of "verbatim material" from an "external file" rather than by use 
% of the `verbatim' environment (i.e. putting the material in the main input 
% file. This is because this environment, in common with most (but not all)
% other "verbatim macros", makes the whole of the "vebatim material" a macro
% argument and therefore eats up TeTeX's internal memory.
%
% Chris Rowley
%

% ---              V E R B A T I M F I L E S . S T Y
%
% --- This LaTeX style-file defines two user-callable macros:
% ---     \verbatimfile{<filename>}    for verbatim inclusion of a file
% ---     \verbatimlisting{<filename>} for verbatim inclusion with line numbers
--
Ralph P. Sobek			  Disclaimer: The above ruminations are my own.
ralph@laas.fr				   Addresses are ordered by importance.
ralph@laas.uucp, or ...!uunet!mcvax!laas!ralph		
If all else fails, try:				      sobek@eclair.Berkeley.EDU
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Reliable software should kill people reliably! -Andy Mickel, Pascal News #13,78