Chapter Installing and Upgrading the OS and Software

Author: Ion-Mihai Tetcu FreeBSD

Author: name contact BSD flavour

Reviewer: name contact BSD flavour

Reviewer: Chris Silva FreeBSD

XXX: I plan to write only the FreeBSD part so we still need authors for the rest (itecu)

An important aspect of system administration is tracking installed versions of both the operating system and third-party applications. An advantage of using BSD systems is the availability of multiple tools to assist the system administrator in determining software versions and their dependencies. These tools indicate which software is out-of-date or has existing security vulnerabilities. Assist in upgrading or patching software and its dependencies. When and how installations and upgrades are done is specific to each organization. The successful admin knows how to use the tools which are available for these purposes, and the cautions that are necessary when working on production systems under the supervision of a more senior administrator.