http://laforge.gnumonks.org/weblog/2010/04/14/#20100414-anatomy_of_gsm_cellphone An excellent [attempt of ] description of the GSM cell phones hardware, design, architecture and implementation
http://www.westnet.com/~gsmith/content/postgresql/chkp-bgw-83.htm improvements to PostgreSQL that could be made by tuning wal/background writer processes
http://www.phenoelit-us.org/dpl/dpl.html default passwords list for various hardware devices
http://www.linuxjournal.com/article/6931 Kernel Korner - I/O Schedulers
http://lxr.linux.no/+trees linux kernel code cross-reference: you can quickly look up a piece of code,, find out in what version it appeared first, and so on.
http://science.ksc.nasa.gov/shuttle/missions/51-l/docs/rogers-commission/Appendix-F.txt famous and somewhat forgotten so called “minority report” by Richard Feynman on the aftermath of Challenger Shuttle disaster in 1986 that determent that management culture of NASA to responsible for the disaster, and not some particular technical failures. Starting quote:
http://www.unixwiz.net/techtips/iguide-kaminsky-dns-vuln.html exellent explanation for the much-hyped Dan Kaminsky DNS vuln. This is for people for whom word “DNS” sounds like it’s in elvish
http://tldp.org/LDP/abs/html/ guide introduces various specific topics like arrays, variable scopes, etc.
http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml google’s internal C++ code guidance
http://cb.vu/unixtoolbox.xhtml awseme reference, any *nix sysadmin must bookmark it