Hola a todos!

Os pongo toda la información si necesitais más detalles pedirlos que yo os los doi gustoso

Tengo una máquina virtual con Ubuntu 9.10 recien instalado. lo que quiero es instalar g++ (compilador de c++), pues al ejecutar g++ -v me indica que el programa no está instalado:
The program 'g++' can be found in the following packages:
 * g++
 * pentium-builder
Try: sudo apt-get install <selected package>
g++: command not found

Por ello ejecuto el comando sudo apt-get install g++, que da la salida:
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Couldn't find package g

Sin embargo no me rindo xD he intento instalar el build-essential que de serie trae también el g++. Pero me dice lo mismo que al intentar instalar g++

He pensado que puede tener algo que ver con los repositorios quizás? (soi un jodido noob de linux). Es por ello que os pongo aquí la salida del comando sudo cat /etc/apt/sources.list (que se supone que son los repositorios desde los que podría descargar (y buscar?) los paquetes que quiero descargar:
# deb cdrom:[Ubuntu 9.10 _Karmic Koala_ - Release i386 (20091028.5)]/ karmic main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

deb http://us.archive.ubuntu.com/ubuntu/ karmic main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ karmic main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://us.archive.ubuntu.com/ubuntu/ karmic-updates main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ karmic-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://us.archive.ubuntu.com/ubuntu/ karmic universe
deb-src http://us.archive.ubuntu.com/ubuntu/ karmic universe
deb http://us.archive.ubuntu.com/ubuntu/ karmic-updates universe
deb-src http://us.archive.ubuntu.com/ubuntu/ karmic-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://us.archive.ubuntu.com/ubuntu/ karmic multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ karmic multiverse
deb http://us.archive.ubuntu.com/ubuntu/ karmic-updates multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ karmic-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://us.archive.ubuntu.com/ubuntu/ karmic-backports main restricted universe multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ karmic-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu karmic partner
# deb-src http://archive.canonical.com/ubuntu karmic partner

deb http://security.ubuntu.com/ubuntu karmic-security main restricted
deb-src http://security.ubuntu.com/ubuntu karmic-security main restricted
deb http://security.ubuntu.com/ubuntu karmic-security universe
deb-src http://security.ubuntu.com/ubuntu karmic-security universe
deb http://security.ubuntu.com/ubuntu karmic-security multiverse
deb-src http://security.ubuntu.com/ubuntu karmic-security multiverse

También busque en el administrador de paquetes Synaptic pero no lo encuentra... y desde el administrador de software de Ubuntu tampoco.

Muchas gracias por adelantado

Salu2 ^_^

vale, me he estado informando del tema y he decidido instalar debian en vez de ubuntu. es más orientado a lo que busco.