A list of labels and citations in an input file is printed by running LATEX on the input file lablst.tex, which is done by typing
latex /usr/local/lib/tex82/lablstLATEX will then ask for the name of the input file, which should be typed without an extension, and for the name of the main document style (e.g., article), used by that file.
The index entries on an idx file are printed by running LATEX on the file idx.tex, which is done by typing
latex /usr/local/lib/tex82/idxLATEX will ask for the name of the idx file, which is typed without an extension.