This text offers UNIX users tools for solving problems. It contains: practical solutions for problems likely to be encountered in logging in, running programs, sharing files, managing space resources, and printing; background on what's going on "behind the scenes" so that you can make sense of the suggestions, rather than simply memorizing keystrokes; an explanation of how to present problems to your systems admin so that you're more likely to get quick, accurate support; a list of the site-specific information to which you should have access, and a place to write it down; and a quick-ref card summarizing what to try first, second, third for commonly encountered problems.