30th March 2009
Imagine you have some styles.css transferred from Win machine to Linux via FTP in binary mode instead of ASCII mode; then
cat styles.css | tr -d "\r" > styles-nocarriage.css
will create styles-nocarriage.css with ^M’s removed.
Alternative syntax:
tr -d "\r" < styles.css > styles-nocarriage.css
Most editors have global replace features which allow to get rid of control characters using regular expressions (exact instructions are editor-specific).
For multiple files, try this:
for f
do
mv $f ${f}~ && tr -d "\r" <${f}~ >$f
rm ${f}~
done
Save this shell script as a file (e.g. dos2unix.sh), then do ./dos2unix.sh . This script accepts wildcards (e.g. ./dos2unix.sh *.php), so be careful!
Posted in *nix, how-to, Notepad | 3 Comments »
23rd March 2009
First, learn about custom CDFs and why they are needed.
The aroma.affymetrix R package google group has a how-to: create a CDF annotation file from scratch.
Also useful: how to convert CDF into an R package, which has all CDF data available (as a PDF with more details).
Posted in how-to, Links, Science | No Comments »
2nd March 2009
I assume you already have configured and working desktop environment, but want to improve performance.
First of all, sudo aptitude install mesa-utils. Then run in a Terminal/Konsole glxgears, and wait for ~15 seconds; if your FPS is ~400 or less, then you do have sluggish video performance (usually manifesting itself as slow scrolling in Firefox/Iceweasel, slow window switching/minimziing/maximizing etc).
After reading through several forums and bug reports and blog posts, I’ve ended with the following modifications to my /etc/X11/xorg.conf:
Read the rest of this entry »
Posted in *nix, Hardware, how-to | 5 Comments »
