iPod Shuffle 2nd Gen USB Dock pinout

yea, not Linux related but it is junk!

For USB I'm using the pin assignments from here. If your using this for anything important you might want to check I did it right....

Nokia 770 Dual MMCs

Looks like the 770 will recognise 2 MMC cards connected to the MMC bus. However according to fanoush on the internettablettalk forum this may not be a great idea as: "they will run in legacy MMC mode (max 20MHz) and there may be bugs since this was never widely used." post here.

Anyway, here's how the wiring looks. Obviously if you intend to do this you need to figure out how to mount everything:





dmesg output:





and mounting:





again, this is currently with the stock tablet 2006 kernel. I also tried with an SD card and an MMC, that didn't appear to work, only the SD card to recognised (the other card didn't appear in dmesg). I've not yet tested how stable this is, just mounted the cards to check it works in principle.

Nokia n770 internally mounted SD card

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Split fasta file into files with one contig per file

This post has moved HERE

Remove all nonalphanumeric characters from a file

sed ':a; $!N;s/[^a-z,A-Z,0-9]//g;ta' myfile

useful bash shortcuts

ctrl-a: jump to beginning of line
ctrl-e: jump to end of line
alt-f: jump forward a word
alt-b: jump back a word

alt-d: delete word
alt-t transpose two words

ctrl-r: search back for a command, hit ctrl-r again to search back further
ctrl-xx: jump back to your last edit, again to get back to original position

For ctrl and alt commands press control AND the key indicated at the same time. More random bash here:
http://blog.webhosting.uk.com/2007/04/08/using-bash-shell-shortcuts/

Extracting part of a field in awk

I had a file where the lines look like this:

all_initstring0010010100111000/1dca.rule118.iter100.score all_initstring0010010100111000/1dca.rule140.iter100.score: 0
all_initstring0010010100111000/1dca.rule128.iter100.score all_initstring0010010100111000/1dca.rule122.iter100.score: 122312
all_initstring0010010100111000/1dca.rule113.iter100.score all_initstring0010010100111000/1dca.rule143.iter100.score: 3213

I wanted to extract the value after rule and before the . in the 1st and 2nd fields and also print the third field. I used awk and the substitution function to replace everything but the required value using a regular expression. Here's the code:

gawk '{gsub(/^.*rule/,"",$1); gsub(/[^0-9].*/,"",$1); gsub(/^.*rule/,"",$2); gsub(/[^0-9].*/,"",$2); print $1 " " $2 " " $3}' myfile

There is actually another solution which is probably nicer:

awk '{ split($1,a1,/\./) ; split($2,a2,/\./); print substr(a1[2],5), substr(a2[2],5), $NF; }' myfile