I'm currently trying to share and use my wildcard certificate from letsencrypt with NFS, but the servers who are supposed to use it, cannot do so. To my Setup: I have 3 VM's (in future maybe 4) running. One is a Reverse-proxy, that receives all http and https traffic and redirects them to my Mai...

Just signed up for Ask Ubuntu. Looks like a great community. I am signed in. Closed all the windows, and the browser. When I open the site again, still signed in. I cannot locate a link to sign out of the forum! Thanks for your help.

My understanding ist that the Android OS, chipset drivers etc. are closed-source in order to create a sealed-off ecosystem for mobile technology (China seems to be making efforts to create diversity). Nevertheless, there are efforts to port devices to alternative OS with varying success, and as o...

test.c: #include <stdio.h> int main() {return printf("helloworld %d",a);} lib.c: int a=0; test.c is using the variable a from lib.c. I turned it into the shared library lib.so. gcc testbench.c -o test -l lib.so throws an error : ‘a’ undeclared (first use in this function) This is unex...

I have followed below steps to install a trusted authority certificate: sudo cp mycert.cer /usr/share/ca-certificates/mycert.pem sudo dpkg-reconfigure ca-certificates sudo update-ca-certificates Now, I want to remove this certificate as it is going to expire soon. Can someone please provide me ...

Earlier today I was upgrading my computer from Ubuntu 19.04 to 19.10. The update temporarily broke my computer, booting into GRUB safe mode. Using this link here, I was able to load the kernel, specifically the following snippet: insmod linux linux /vmlinuz root=/dev/sda2 initrd /initrd.img boot...

I had to setup my root partition with the old LVM mirror capability (as shown below, it says "m" in the attributes). This was required so I can boot on that partition. The new RAID1 doesn't work at all. I tried many times with all sorts of settings but it did not help. Anyway... I read that it w...

System- core i7 4790, nvidia GTX 970, 16gb RAM, ubuntu linux. Prior to an update everything was fine. After running a software update my distro shows itself as being version 20.04 although I didn't specifically ask for that, (lsb_release -d: "Description: Ubuntu Focal Fossa (development branch"...