vim word movement with underscore delimiter

see VIM FAQ, 12.35.
:set iskeyword-=_

Also see the camelcasemotion plug-in, described in one of the comments below by leoc.me.

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SCons error with Ubuntu Hardy: "scons: *** object of type 'int' has no len()"

delete .sconsign.dblite, since the function convert_old_entry in /usr/lib/scons/SCons/Node/FS.py that should handle old formats of .sconsign.dblite is buggy.

grep alias with arguments and filter

alias mygrep 'grep -i -R \!^ * | grep -v \.svn'

(!^ passes the first argument)

(works only in cshell, for bash use something like this.)

skype on ubuntu gutsy amd64

install using AMD64 section of this HowTo.
(extract .deb packages using "-x", use LD_LIBRARY_PATH when starting skype.)

install webcam driver as described here. it is important to remove the old driver from its location.

encode png images to x264 avi

for i in `seq 1 3`; do mencoder mf://*.png -sws 10 -vf scale=800:592 -ovc x264 -x264encopts qp=40:subq=7:pass=$i -o output.avi; done

debug http web form url

Save the page to your local disk and change the method to a get instead of submit and you'll see the values in the addressbar.

even more useful: Live HTTP Headers Addon