## Posts

Showing posts from November, 2008

### Don't try this at home, folks!

bkil@work /home/bkil/1 $tar --remove-files -cvzf 1.tar.gz . ./ ./1.sh ./cp_ln.sh ./cp_ln.sh. ./format.mysql.txt (...) ./test2.sh ./things_for_my_blog.tar.bz2 ./wc-c ./wgetd.sh ./very_important_files.tar.bz2 ./1.tar.gz tar: ./1.tar.gz: file changed as we read it tar: .: Cannot rmdir: Invalid argument tar: Error exit delayed from previous errors bkil@work /home/bkil/1$ ls bkil@work /home/bkil/1 $ls -a . .. bkil@work /home/bkil/1$ Thankfully, I could reconstruct every import file from my backups except for some uninteresting logs. I have compressed "." before, and I have also used the "--remove-files" switch many times, but it looks like I rarely combine the two. Now I remember why! :) I should have written either "cd ..&&tar --remove-files -cvzf 1.tar.gz 1" or "tar --remove-files -cvzf 1.tar.gz * .[^.]* ..?*"

### Riding your bike compared to using local public transport

Advantages * no waiting time at stops or changes - direct and dedicated connection (see note#1) * no idling at intermediate stops - rapid transit * stops are at your doorsteps - no walking that slows you down * traffic congestion is usually not a problem * never crowded, you always have a seat * the air conditioning is always on and works as you will * fares are fair and mostly constant - doing some inexpensive maintenance once in a few months or twice a year * about the same journey time overall as on bus or tram - some routes are even faster * exercise is good for you * lower top speed - safer Drawbacks * you can't read a newspaper and such (except at traffic lights) * in very bad wet weather you may have a hard time without full fairing * bikes must face inferior road conditions on the side of the road and on unmaintained bike paths * more traffic light waiting time on many routes * lower top speed Note #1: You may combine bicycle commuting with public transport if you have a

### NEWS: Horner oneliner in Haskell

It's fun that evaluating a polynomial using the Horner-scheme takes only a single line of Haskell code. I wish they had thought functional programming as a basic skill! ;) http://people.inf.elte.hu/bkil/en/pg/horner.hs

### NEWS: added quotes, updated Lenny instructions

I have added a few more insightful quotes. The Debian Lenny instructions got a slightly modified package list. I fixed a few minor bugs in the text while at it (ampersand missing and the like). Also added some sound related instructions.

### Design a minimalistic font with grave discrepancy

My plan is to experiment with (monochromatic-) font designs. They would need to have a one-to-one correspondence with the Latin alphabet and Hindu-Arabic numerals. The object is to provide better clarity than the best possible with standard fonts. I will start investigating numerals first. It is a bonus if some symbols would resemble standard ones.