Listing installed packages in gentoo

¿que paquetes tenemos instalados en gentoo? ¿como averiguarlo?

way 1:

equery es una herramienta de gentoolkit por lo que la emergemos

emerge gentoolkit

así ya podemos usar:

equery list "*"

way 2:

ls -dl /var/db/pkg/*/*

way 3:

using nikita list-gentoo-packages.sh
========
#!/bin/bash
#
# list-gentoo-packages.sh v0.2
# Copyright 2007-2009, Nikita Melnichenko [http://nikita.melnichenko.name]
# License: GPL-2 (http://opensource.org/licenses/gpl-license.php)
#
# List all installed Gentoo packages with USE flags.

# generate use flags for package $1 (official, but very slow)
function portage_gen_use_flags_by_equery ()
{
    equery -N -C uses '='"$1" | grep '^ [+-]' | awk '{ printf "%s%s\n", $2, $3 }'
}

# generate use flags for package $1 (unofficial, but fast)
function portage_gen_use_flags_from_var_db_pkg ()
{
    if ! [ -f /var/db/pkg/"$1"/IUSE ]
    then
        return
    fi

    local use_flags=`cat /var/db/pkg/"$1"/USE`
    for iuse in `cat /var/db/pkg/"$1"/IUSE | sed -e "s/ /\n/g" | LC_ALL=C sort | uniq`
    do
        iuse=`echo "$iuse" | sed -e "s/^[+-]//g"`
        used=0
        for use in $use_flags
        do
            if [ "$use" == "$iuse" ]
            then
                used=1
                break
            fi
        done

        if [ $used -eq 0 ]
        then
            echo -n '-'
        else
            echo -n '+'
        fi
        echo $iuse
    done
}

# generate use flags for package $1
function portage_gen_use_flags ()
{
    portage_gen_use_flags_from_var_db_pkg "$1"
}

# generate list of all installed packages with their USE flags
function portage_list_installed ()
{
    find /var/db/pkg -mindepth 2 -type d | sed -e 's|^/var/db/pkg/||' | LC_ALL=C sort | while read pkg
    do
        echo -n "$pkg"
        portage_gen_use_flags "$pkg" | LC_ALL=C sort | while read flag
        do
            echo -n " $flag"
        done
        echo
    done
}

portage_list_installed
========

way 4: (root requirido) solo paquetes instadalos explicitamente

cat /var/lib/portage/world



more info:

http://www.gentoo.org/doc/es/gentoolkit.xml