list installed packages by using apt

[Derek Broughton]

sktsee wrote:

> On Mon, 30 Jul 2007 12:11:47 +0200, Bram Kuijper wrote:
> 
>> Hi all,
>> 
>> any way to list any installed packages by using one of the apt tools?
>> ie. without using dpkg --list?
>> 
>> cheers,
>> Bram
> 
> $ aptitude search ~i

# aptitude search '~i !~M' | tr -s ' ' | cut -f 2 -d ' '

- search for installed (Manually) packages, 
- extract just the package names
-- 
derek