# user might have provided their own apt sources.list
if ! grep -q grml /etc/apt/sources.list.d/grml.list 2>/dev/null ; then
cat >> /etc/apt/sources.list.d/grml.list << EOF
# user might have provided their own apt sources.list
if ! grep -q grml /etc/apt/sources.list.d/grml.list 2>/dev/null ; then
cat >> /etc/apt/sources.list.d/grml.list << EOF