» The FreeBSD Project - 135 days ago (freebsd.org)

FreeBSD is an advanced operating system for x86 compatible (including Pentium? and Athlon?), amd64 compatible (including Opteron?, Athlon?64, and EM64T), ARM, IA-64, PowerPC, PC-98 and UltraSPARC? architectures. It is derived from BSD, the version of UNIX? developed at the University of California, Berkeley.

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» Advanced Bash-Scripting Guide - 136 days ago (tldp.org)

This tutorial assumes no previous knowledge of scripting or programming, but progresses rapidly toward an intermediate/advanced level of instruction . . . all the while sneaking in little snippets of UNIX wisdom and lore. It serves as a textbook, a manual for self-study, and a reference and source of knowledge on shell scripting techniques.

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