Minding the gap between administration and development
I am running Ubuntu Linux virtual machines on VMware ESXi (vSphere Hypervisor), and needed a mechanism to add SCSI disks to VMs without having to reboot. After adding the disk in VMware ESXi, the disk still wasn’t visible to the guest operating system. It seemed like I needed some mechanism to force Linux to rescan … Read moreRescan SCSI Controller on Linux to Detect New Disks
If you’re a content creator, you might need the ability to record your screen and microphone as you narrate what you’re doing. On Windows or MacOS, I typically use TechSmith Camtasia for this purpose. However, Camtasia isn’t available on Chromebook at the moment. At first, I was concerned that I might not be able to … Read moreRecord a Screencast on a Google Chromebook
I’ve been using Ubuntu Server for a while now, on various Microsoft Azure or Amazon Web Services (AWS) EC2 instances, and the experience has been pretty awesome. I recently spun up a RedHat Enterprise Linux (RHEL) 7.3 instance on AWS EC2. RedHat 7.3 was just released about a week ago from today. One of the … Read moreError Messages Running Yum on RedHat 7.3
Introduction Software developers, infrastructure & DevOps engineers, and operational IT staff are heavy users of the command line. The benefits of the command line are clear: Commands are / should be readable Commands are repeatable Commands can be shared amongst a team (eg. via source control / chat / etc.) Automation is scalable across many … Read moreDesigning Command Line Tool User Experience
I recently installed a couple packages that I didn’t need any longer on an Ubuntu Linux system. Most likely, you’ve installed packages using apt install or apt-get install. However, neither of these commands offer a command that lists out the packages that you’ve installed. To list out the installed packages, you use the dpkg command … Read moreFind and Remove Package on Ubuntu Linux
I recently was trying to install Ubuntu Desktop 16 under a Hyper-V VM on Windows 10. Naturally, I downloaded the ISO image for the operating system, mounted it to a new Generation 2 Virtual Machine, and then proceeded to boot the VM. Unfortunately the VM was unable to boot to the setup media, due to … Read moreHyper-V SecureBoot Error
If you’re looking for a solution to find large files (high disk utilization) on Windows 10, you’re in luck! In fact, you can even do this from the Ubuntu on Windows Bash console. There’s a tool called ncdu, which is short for nCurses du. “du” refers to the “disk utilization” tool that has been available on … Read morencdu: Identify Large Files on Windows 10
If you’re a home user, using the Tomato Firmware on a device, such as the Linksys WRT54GL, and you don’t have an internal DNS server, then Tomato might be able to save the day. For myself, I’ve got several computers on my internal LAN, and do not have an internal DNS server. Each of these … Read moreTomato Firmware as DNS Server