需要在Ubuntu 14.04（trusty64）上将Go 1.2.1升级到1.3+

ENVIRONMENT
vagrant / virtualbox / ubuntu-trusty64

my Go version is 1.2.1 installed via apt-get install golang

I need and should have installed a more recent (1.3+) version (repo outdated)

Is it best to:
A - apt-get uninstall, re-install using more updated repo
B - try to upgrade existing Go to 1.3 or higher
C - ?

The typical approach I believe is to use the godeb tool: https://github.com/niemeyer/godeb

I recommend uninstalling the version of Go that comes with Ubuntu (1.2.1, as you mentioned). Instead, follow the instructions on the Go install page.

Summary:

  1. Download the latest tarball for your OS. In this case, you'll want the 64-bit linux package. Currently go1.4.2.linux-amd64.tar.gz.
  2. Open up a terminal to the directory you downloaded the tarball and type
    sudo tar -C /usr/local -xzf go1.4.2.linux-amd64.tar.gz
  3. The package is now installed on your system, but you still need to export the binaries to your $PATH. So we'll modify your environment using the Ubuntu way:
    sudo echo "export PATH=\$PATH:/usr/local/go/bin" > /etc/profile.d/golang_bin.sh
  4. Close the terminal window, and open up a new one (so the new profile file we created gets read) then check that your installation succeeded by typing:
    go version

IMG:  To install the latest version of Go programming language in all currently supported versions of Ubuntu, including Ubuntu 14.04, open the terminal and type:

sudo snap install go --classic --channel stable

This snap provides an assembler, compiler, linker, and compiled libraries for the Go programming language. There are other channels besides stable, but the stable channel is the latest version of Go programming language. The go snap package will be updated automatically when updates are available.