» Examware - Unix tutorials, exercises and resources. Features on-line tests and training materials.
» First Edition Unix Manual - The original Unix users manual.
» Online Single Unix Specification - Ordering page for the Open Group's Single Unix Specification.
» Understanding Unix Concepts - Conceptual discussion of Unix and Unix-like operating systems.
» Unix Filesystem - Description of how the filesystem works internally.
» Unix Guru Universe - Searchable collection of articles and guides for Unix administrators and power-users. Offers materials on all major and many minor distributions.
» Unix Manuals - Brief Unix tutorial, online man pages and reference materials for the Unix operating system and common Unix utilities.
» Unix Seventh Edition Manual - Source material from Bell Labs.
» Unix Signals and Process Groups - Short survey of Unix signal handling and process groups, conceptually and with interface descriptions. Compares System V Release 3, System V Release 4, BSD, and POSIX variants.
» Unix System Administration - Description of Unix internals by Frank G. Fiamingo at Ohio State University.
» Unix and Linux Commands - Basic as well as more obscure commands for Unix/Linux operating systems.
» Unix for Advanced Users - Description of startup/shutdown, process management and memory management.
» pyttymon - A simple daemon that monitors and limits usage of ttys. It is implemented in Python. A simple config file can specify monthly, daily, session, and idle limits based on tty, user, group, and ttys in use.
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