I tried to do what was mentioned in the installation guide:
sudo apt-get install arduino arduino-core
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
adobereader-enu:i386 : Depends: libgtk2.0-0:i386 (>= 2.4) but it is not going to be installed
arduino : Depends: libjna-java but it is not going to be installed
Depends: librxtx-java (>= 2.2pre2-3) but it is not going to be installed
Recommends: extra-xdg-menus but it is not going to be installed
arduino-core : Depends: gcc-avr (>= 4.7.0) but it is not going to be installed
Depends: avrdude but it is not going to be installed
Depends: avr-libc (>= 1.8.0) but it is not going to be installed
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
It seems that the arduino installation is aimed for an older
Ubuntu. So what to do.