I’m trying to figure out how to enable user namespaces capability in my kernel (I think CAP_SYS_USER_NS). I’m using Debian Stretch, kernel 4.6.0-1-amd64. My assumption is there is a way to turn on user namespaces and recompile the kernel. After some hours searching, I can find a post of doing this in Ubuntu (https://blog.tutum.co/2013/12/14/enabling-the-user-namespace-in-ubuntu-13-10-saucy/) but … Read more
I just installed this software off virtual box, i downloaded the ISO off the official ubuntu website, was the lastest LTS. I attempted to install Guest Additions using the ‘Insert Guest Additions CD Image”. Result: Verifying archive integrity… All good. Uncompressing VirtualBox 5.2.0 Guest Additions for Linux…….. VirtualBox Guest Additions installer Removing installed version 5.2.0 … Read more
What is going on inside the /sys directory on a Linux system? Answer From sysfs.txt: sysfs is a ram-based filesystem […]. It provides a means to export kernel data structures, their attributes, and the linkages between them to userspace. In essence /sys allows you to get information about the system and its components (mostly attached … Read more
I am getting this error: Makefile:181: *** Error: unable to find the sources of your current Linux kernel. Specify KERN_DIR= and run Make again. Stop. Basically I’m doing: $ sudo /etc/init.d/vboxdrv setup Removing existing VirtualBox non-DKMS kernel modules [ OK ] Building the VirtualBox Guest Additions kernel modules The headers for the current running kernel … Read more
While I can use lsmod in order to show currently active kernel modules, how can I see which drivers are statically built into the kernel AND currently active? Answer You could do a cat /lib/modules/$(uname -r)/modules.builtin From the Kernel Documentaton modules.builtin This file lists all modules that are built into the kernel. This is used … Read more
I try to tweak my development system to maximal reliability. I disabled swap, because for GUI usage it mostly renders the machine unresponsive in such a way not useable anymore. Nevertheless, if agressive appications eat up the memory, some mechanisms seem to kick in that making the most out of it on cost of speed. … Read more
I am new to using Ubuntu. I am trying to install Genymotion so I can have access to an android emulator. In order to use Genymotion, it is required I have VirtualBox. I have VirtualBox installed but it seems as if I need to sign a kernal module… and I really am not sure how … Read more
