cd -
	Go to the previous dir


Env vars:

cdpath
	use it for quick cd
OLDPWD
	filled by "cd -"


zsh options:

chase_links
	stop lie about [soft] links

g/a and hit the Up-button
    cd /var/log/apache2 - will be found at the history

2:
http://habrahabr.ru/post/151484/

xiki:
https://www.youtube.com/watch?v=bUR_eUVcABg
http://xiki.org/
https://www.kickstarter.com/projects/xiki/xiki-the-command-revolution?ref=card
https://www.facebook.com/xikirevolution