Edit and add to librarypath programatically

Is it possible to do the following programatically?

In Matlab, type

>> edit librarypath.txt and add the line:

C:/Program Files/Micro-Manager-1.4

Thanks Jason

Answer 1

[Walter Roberson]

lpfile = fullfile(prefdir, 'librarypath.txt');
[fid, message] = fopen(lpfile, 'at');
if fid < 0;
   error('Could not open file because: %s', message);
end
fseek(fid, 0, 'eof');
fprintf(fid, '%s\n', 'C:/Program Files/Micro-Manager-1.4');
fclose(fid)