Finding out current kernel configuration

to check current kernel version use :

uname -a

current kernel configuration is available in :

/proc/config.gz

extract data by using :

zcat /proc/config.gz

or save to a file using :

zcat /proc/config.gz > current-rpi-defconfig
```

if /proc/config.ga is not available, execute : 
```
sudo modprobe configs
```