# set kernel version(s) to store their .config
if [ -d /usr/src/linux ] ; then
kernel_num=`ls /usr/src/ | grep 'linux-' | awk -F- '{ print $2 }'`
# set kernel version(s) to store their .config
if [ -d /usr/src/linux ] ; then
kernel_num=`ls /usr/src/ | grep 'linux-' | awk -F- '{ print $2 }'`