... And the Fingers of . ... This manual, the Linux System Administrators' Guide, describes the system administration aspects of using Linux. It is intended for people who know next to nothing about system administration (as in ``what is it?''), but who have already mastered at least the basics of normal usage. ... The structure of this manual is such that many of the chapters should be usable independently, so that if you need information about, say, backups, you can read just that chapter. ...