To use
ubuntu-chroot, you only need root access. No kernel configuration needed. It just works.It even supports dynamic namespace isolation, hardware access, rootfs.img support, post-exec scripts as a replacement for init, running at boot even the device is locked and encrypted, etc.
Even though this is more primitive than the Droidspaces project, it still provides basic Linux on Android.
v4.4 was released with fixes related to BusyBox. From now on, we specifically use our custom BusyBox to perform certain shell operations.
https://github.com/ravindu644/Ubuntu-Chroot/releases/tag/v4.4