recebi um aviso
W Failed to fetch http://ppa.launchpad.net/groovy-dev/groovy/ubuntu/dists/trusty/main/binary-amd64/Packages
O que há de errado com meu /etc/apt/sources.list ?
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://ru.archive.ubuntu.com/ubuntu/ trusty main restricted
deb-src http://ru.archive.ubuntu.com/ubuntu/ trusty multiverse main restricted universe #Added by software-properties
## Major bug fix updates produced after the final release of the
## distribution.
## 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://ru.archive.ubuntu.com/ubuntu/ trusty 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://ru.archive.ubuntu.com/ubuntu/ trusty multiverse
## 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://ru.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse
deb-src http://ru.archive.ubuntu.com/ubuntu/ trusty-backports main restricted universe multiverse #Added by software-properties
deb http://ru.archive.ubuntu.com/ubuntu/ trusty-security main restricted
deb-src http://ru.archive.ubuntu.com/ubuntu/ trusty-security multiverse main restricted universe #Added by software-properties
deb http://ru.archive.ubuntu.com/ubuntu/ trusty-security universe
deb http://ru.archive.ubuntu.com/ubuntu/ trusty-security 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 trusty partner
deb-src http://archive.canonical.com/ubuntu trusty partner
## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://ru.archive.ubuntu.com/ubuntu/ trusty-updates restricted main multiverse universe
deb-src http://ru.archive.ubuntu.com/ubuntu/ trusty-updates restricted main multiverse universe #Added by software-properties
deb http://ru.archive.ubuntu.com/ubuntu/ trusty-proposed restricted main multiverse universe
deb-src http://ru.archive.ubuntu.com/ubuntu/ trusty-proposed restricted main multiverse universe #Added by software-properties
# VirtualBox VBOX
# deb http://download.virtualbox.org/virtualbox/debian trusty contrib # disabled on upgrade to trusty
deb http://archive.canonical.com/ trusty partner
# deb-src http://archive.canonical.com/ trusty partner
não há problema com o seu arquivo /etc/apt/sources.list .
vá para /etc/apt/sources.list.d usando
cd /etc/apt/sources.list.d
pesquise o arquivo PPA relacionado a groovy-dev e detecte que, em seguida, atualize
sudo apt-get update
O erro 404 ocorre quando a página da web não está disponível.
não há de fato nenhuma liberação para confiança:
se você for para
http://ppa.launchpad.net/groovy-dev/groovy/ubuntu/dists/
você verá que trusty está faltando.