- system(), rmdir() sets errno, use it
- Use warnx() if strchr failed, not warn()
- Constify some arguments
- Fix cases when errx()/warnx() should be used instead of err()/warn()
due to errno not being set.
Group code:
------------
- List members in a neat fashion, separated by commas
- groupmod(): Use find_group_info - consistency
c426bea6d7