LGrind is a descendant of the Unix utility vgrind. Unlike other packages this is not pure TeX but an external preprocessor. Options for producing includable files and pro- cessing embedded listings in LaTeX texts are provided. You can change this behaviour by modifying the lgrindef file. You will obtain lgrind.sty. - Or simply run make in the top directory.
Main documentation is in lgrind.dtx.
Run LaTeX on lgrind.dtx and the result is lgrind.dvi. There are also manpages lgrind.1 and lgrindef.5 for people who prefer those, but notice that I am not always able to keep them up to date. LGrind contains non-free code written by Van Jacobson, who does not answer to any request for changing his licence. This software is therefore not maintained. I also do not accept any cheques anymore.