# Linux Kernel Module Cheat

#### 17.1.2. Find the kernel config

Get the build config in guest:

    zcat /proc/config.gz

or with our shortcut:

    ./conf.sh

or to conveniently grep for a specific option case insensitively:

    ./conf.sh ikconfig

Source: rootfs_overlay/lkmc/conf.sh.

This is enabled by:

    CONFIG_IKCONFIG=y
    CONFIG_IKCONFIG_PROC=y

From host:

    cat "$(./getvar linux_config)"

Just for fun https://stackoverflow.com/questions/14958192/how-to-get-the-config-from-a-linux-kernel-image/14958263#14958263:

    ./linux/scripts/extract-ikconfig "$(./getvar vmlinux)"

although this can be useful when someone gives you a random image.