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A common criticism of fluorescent lights is the inability to use dimmers, as mentioned in Julien Goodwin’s blog. However with some thought at the time the lights are installed this problem can be solved. The first thing to keep in mind is that an infinite number of levels of illumination (analogue scale) is not really […] My Thinkpad has started to run hot recently. If I do anything CPU intensive then it will heat up to >80C and then turn itself off. When idling it seems to stay at about 60C when the ambient temperature is about 24C. It used to not be like this, a couple of years ago I […] I just read an interesting blog post from December 2005 about the environmental impact of bio-fuels. It makes some really good points that should be studied by everyone who is interested in protecting the environment. However this doesn’t mean that bio-fuels are inherently bad, just that some methods of production are bad. The blog claims […] The book SE Linux by Example has been reviewed on Slashdot. The issue of Perl scripts was raised for discussion. It is of course true that a domain which is permitted to run the Perl interpreter can perform arbitrary system calls – it can therefore do anything that SE Linux permits that domain to do. […] I got the idea for this from Ben Hutchings. A. Copy the list below to your own journal and Bold the actions you are already taking Underline the actions you plan to start taking Italicize the actions that don’t apply to you B. Add one (or more) suggested action(s) of your own C. Leave a […] Erich Schubert comments on the issues relating to getting big changes into Debian. This is something that I had also noticed. I started work on SE Linux in Debian in 2001 and continued it actively until 2003 when I joined Red Hat. Less than a year after I joined Red Hat there was a Fedora […] This morning when walking through a shopping center car park on my way to work a grannie came fairly close to squashing me. She accellerated her Mazda 323 backwards as hard as possible and hit a purple Magna. The back ends of both cars were seriously damaged, and the Mazda (which received the worst damage) […] Creating a simple SE Linux policy module is not difficult. audit(1173571340.836:12855): avc: denied { execute } for pid=5678 comm=”spf-policy.pl” name=”hostname” dev=hda ino=1234 scontext=root:system_r:postfix_master_t:s0 tcontext=system_u:object_r:hostname_exec_t:s0 tclass=file For example I had a server with the above messages in the kernel message log from the spf-policy program (run from Postfix) trying to run the “hostnme” program. So I […] Leon Brooks linked to this article claiming that sound not electricity travels through nerves. When you put a moderate voltage through your body it will cause muscle action (try putting 1000V at low current between fingers of the same hand for safety). The original experiment that suggested that electricity is used involved applying a shock […] Late this afternoon I had a visual migraine while driving. I was driving west and the glare from the sun was making it difficult to see so I didn’t realise that I was having a migraine until I stopped. When I finished my journey and went inside a reasonably dark room I started seeing flashes […] |
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