Reinstalling a system from package list?

[Rashkae]

Maxime Alarie wrote:
>  
> 
> Hello,
> 
>  
> 
> Im just  curious if there is a way to reinstall a system from  the
> output of dpkg -list
> 
>  
> 
> Let's say I have a crash, I reinstall the base system and then want to
> reinstall all the packages I had  before the crash... I, like many
> others I'm sure,  usually Install a system then proceed to install other
> packages  along the way to suit  my  needs. But we do not keep a trace
> of those  small packages installed for this dependency or that small
> program we want to try..
> 
>  
> 
> Thanks.

http://www.linuxforums.org/forum/debian-linux-help/40955-need-list-installed-packages.html