$ wget https://releases.linaro.org/archive/14.04/components/toolchain/binaries/gcc-linaro-arm-none-eabi-4.8-2014.04_linux.tar.xz -P /tmp
$ tar xJvf /tmp/gcc-linaro-arm-none-eabi-4.8-2014.04_linux.tar.xz -C /opt/toolchains