The file /var/lib/cvs/CVSROOT/cvsignore can be created to list patterns of filenames to ignore for all users. Individual users can place their additions in /home/kayon/.cvsignore. The environment variable CVSIGNORE can also be used. An example to ignore many of the temporary files created by LATEX is:
*.glo *.idx *.toc *.ilg *.ind *.pyc *.log *.aux *.out *.pdf *.cut .thumbnails tmp_*.png