System Administration – Jason's Web Site

How to mount an LVM volume in Linux

I wanted to access the contents of a hard drive containing a logical volume group. This happened to be a drive that I had removed from an Ubuntu Linux system and I needed to grab some files from it. First make sure you have the lvm2 tools. On Ubuntu or other Debians: Make sure you… Read More »

How to use a different Java version on Ubuntu

I’m doing this on Ubuntu 20.04 but it should work on any modern-ish Ubuntu or other Debian Linux. In this scenario, you have already installed “default-jdk” or “default-jre” (which is version 11 on Ubuntu 20.04) and have a working Java installation, and now you want to use a different java version (in my case, I… Read More »