Eu tentei instalar o shutter com o seguinte comando, mas estou recebendo um erro:
$ sudo apt-get install shutter
Shutter:
Depends: gnome-web-photo but it is not installable
Depends: libgnome2-perl but it is not installable
Depends: libgnome2-vfs-perl but it is not installable
Depends: libgnome2-wnck-perl but it is not installable
Depends: libgoo-canvas-perl but it is not installable
Depends: libgtk2-imageview-perl but it is not installable
Depends: libgtk2-trayicon-perl but it is not installable
Depends: libgtk2-unique-perl but it is not installable
Depends: libnet-dbus-perl but it is not installable
Depends: libproc-processtable-perl but it is not installable
Depends: libwww-mechanize-perl but it is not installable
Depends: libx11-protocol-perl but it is not installable
Depends: libxml-simple-perl but it is not installable
Depends: perlmagick but it is not installable
Depends: libpath-class-perl but it is not installable
Depends: libjson-perl but it is not installable
Depends: libjson-xs-perl but it is not installable
Depends: libnet-dropbox-api-perl but it is not installable
Depends: libfile-which-perl but it is not installable
Depends: libproc-simple-perl but it is not installable
Depends: libsort-naturally-perl but it is not installable
E: Unable to correct problems, you have held broken packages.
Como posso corrigir isso?
Eu tive esse problema com o Shutter há algum tempo, o motivo é que você tem dependências quebradas. Execute isso no terminal:
sudo apt-get autoremove
sudo apt-get install -f
Você também pode usar alguns Tweaks de vez em quando para limpar seu cache apt, configs, etc. Por exemplo, o Ubuntu Tweak, que eu usei quando isso aconteceu. Depois disso eu aconselho você a usar o Synaptic ou o Ubuntu Software Center para instalar o Shutter.