I have Open Mode kernel (because I have nitdroid installed), what packages are needed for command mkswap and swapon/swapoff?

PS: during installation of sudo package, this one show me an error (I attached it) and when I do sudo su show me unable to change to sudoers gid: Operation not permitted.

PS2: setswap0 and rmswap0 attached in the first post are txt files; should I rename them before chmod command, isn't it?