wx13

# Put the CWD in the window title.
function chtt {
	echo -en "\033]2;$@\007"
}
export PROMPT_COMMAND='chtt $(pwd)'
# Put the CWD in the window title.
function chtt {
	echo -en "\033]2;$@\007"
}
export PROMPT_COMMAND='chtt $(pwd)'

wx13

function cd_save_hist() {
    if [ -z "$1" ]
    then
        d="$HOME"
    else
        d="$1"
    fi
    builtin cd "$d"
    dp=$(pwd)
    history -s cd ${dp}

mro

#!/usr/bin/env ruby
require 'complex'

class Array
	# DFT and inverse.
	# 
	# Algorithm from 
	# 'Meyberg, Vachenauer: Hoehere Mathematik II, Springer Berlin, 1991, page 332'
	#
	# See http://blog.mro.name/2011/04/simple-ruby-fast-fourier-transform/