remove whitespace with sed

remove trailing whitespace from every line in file

cat | sed 's/[ \t]*$//' >

from

http://www.cyberciti.biz/tips/delete-leading-spaces-from-front-of-each-word.html

opencv ubuntu ppa 2.3.1

Appears to work perfectly: https://launchpad.net/~gijzelaar/+archive/opencv2.3