How to uninstall batmand-gateway-dkms from Ubuntu
To uninstall just batmand-gateway-dkms package itself from Ubuntu execute on terminal:
sudo apt-get remove batmand-gateway-dkms
Uninstall batmand-gateway-dkms and it's dependent packages
To uninstall the batmand-gateway-dkms package and any other dependant package which are no longer needed on Ubuntu.
sudo apt-get autoremove batmand-gateway-dkms
If you also want to delete configuration and/or data files of batmand-gateway-dkms from Ubuntu then this will work:
sudo apt-get purge batmand-gateway-dkms
To delete configuration and/or data files of batmand-gateway-dkms and it's dependencies from Ubuntu then execute:
sudo apt-get autoremove --purge batmand-gateway-dkms
batmand-gateway-dkms package information
DKMS Source for the batmand-gateway kernel module
This package provides the source code for the batmand-gateway-source kernel modules, packaged with approriate configuration for DKMS to build new modules dynamically. It is used to reduce the load of a batmand gateway by moving all tunnel related operations from userspace to kernelland and thus minimize memory operations between them. batmand doesn't require the gateway to be loaded to provide gateway functionality. Kernel source or headers are required to compile these modules. This package is part of batmand. See batmand package for more information.
More information about apt-get remove
Advanced Package Tool, or APT, is a free software user interface that works with core libraries to handle the installation and removal of software on Debian, Ubuntu and other Linux distributions. APT simplifies the process of managing software on Unix-like computer systems by automating the retrieval, configuration and installation of software packages, either from precompiled files or by compiling source code.
apt-get is the command-line tool for handling packages, and may be considered the user's "back-end" to other tools using the APT library.
apt-get remove is identical to install except that packages are removed instead of installed. Note that removing a package leaves its configuration files on the system. If a plus sign is appended to the package name (with no intervening space), the identified package will be installed instead of removed.