" Input: { (kernel key) (=xyz) or var.(kernel key) (=xyz) for example, "ck set kernel var.install_to_env" will print install_to_env var "ck set kernel var.install_to_env=yes" will set install_to_env var to yes "ck set kernel var.install_to_env=" will set install_to_env var to "" "ck set kernel" will print all vars } Output: { return - return code = 0, if successful > 0, if error (error) - error text if return > 0 } "