14.04octavestable-release-updates
I am using Ubuntu 14.04.2. I want to install the latest version of Octave (Octave 4.0.0 ). But in official Ubuntu repository ,there is only octave version 3.8 available for download/install.
How can I install Octave 4.0.0 safely/easily in Ubuntu 14.04.2?
I don't want to install/compile it directly from source which is
available at official website, because I feel it is not easy method to
install.
This PPA should solve your problem, provided you are running the latest 12.04.
Open Terminal Ctrl-Alt-T and type:
sudo apt-add-repository -y ppa:picaso/octave sudo apt-get update sudo apt-get install octave sudo apt-get install liboctave-dev
Seeing as I only told Ubuntu to install nvidia-346, why has it also installed all of these other Nvidia drivers (331, 340 and 349)?
Additional Drivers lists every possible driver that your system is known to be able to use. It doesn't mean that it's installed, but rather that it's available and (likely) works with your hardware.
You can see what NVIDIA drivers and support packages you've actually installed using this command:
dpkg --get-selections | grep nvidia
For example, note the discrepancy on my system:
All the Nvidia drivers, except for nvidia-331-updates, are described as "open source". However, nvidia-331-updates is described as "proprietary". Why are these drivers open source, when I thought that all official Nvidia drivers would be proprietary, and only Nouveau would be open source?
This appears to be a bug with drivers added from a PPA. Note, again, that the nvidia-370 driver is listed as "open-source" even though it's very much not. This is because my driver comes from a PPA, and apparently didn't have the attached metadata (or similar) that marked the as proprietary. The only open-source driver is the actual Nouveau driver.
Best Answer
You have two options:
Use the octave ppa, which already has the 4.0 version. You can install octave like this:
Download and compile the sources yourself: