-ifeq ($(OS_VERSION_ID),14.04)
- @sudo -E apt-get $(CONFIRM) $(FORCE) install software-properties-common
-endif
-ifeq ($(OS_ID)-$(OS_VERSION_ID),debian-8)
- @grep -q jessie-backports /etc/apt/sources.list /etc/apt/sources.list.d/* 2> /dev/null \
- || ( echo "Please install jessie-backports" ; exit 1 )
-endif