[Linux env] Updated apt-get cmd and howto create rootfs for ubuntu arm
[Linux env] Boot ubuntu into terminal by default
[Linux env] Added a user to a group
[Linux env] Updated sudo usage
[Linux dev] Updated interrupt flow handler
[Linux env] Updated ssh for Ubuntu14.04 and hostname changes
[Linux dev] Updated interrupt APIs
[Linux dev] Updated interrupt API and irqaction
[Linux env] How to check software package version