install tmux

[drmike]

Damn if I know but marrco thinks it's a good idea:

http://www.lowendtalk.com/questions/9060/new-lowendscript-for-php-sites

I guess your script is just for squeeze (php + nginx on dotdeb main repo) so i suggest you to install tmux for 2 reasons:

1. it's the best terminal multiplexer (and remove screen with your script too)

2. you can add the newer version via squeeze-backport so you have to add that repo too, and when (if ?) someone studies your script will learn about backports too!