How to reset CentOS 7 based VM’s root password on a KVM system
Steps: Reboot. You should see the menu with CentOS 7 and have a few split seconds to press e for edit. Scroll down, you’ll have
ubuntu
Solving weird DNS resolv.conf issues on Ubuntu using the resolvconf service
Background Ubuntu has this fancy system where by /etc/resolv.conf isn’t actually a proper resolver but refers to a local server called 127.0.0.53. In some circumstances
How to determine the iops on a disk
Here is a quick primer and script to determine the iops on a disk. You can use the iostat utility but you have to first
SNMP Configuration (snmpd.conf) Cheat Sheet
A curated list of SNMP commands and parameters. The article aims to highlight differences between RedHat (e.g. AlmaLinux/CentOS) based distributions and Debian (e.g. Ubuntu) based
How to test PPTP VPNs from the command line using Ubuntu
Many Windows servers still use Point to Point Tunneling Protocol. It’s tried and tested, but apparently not that secure. MacOS removed it because it’s obsolete.
How to see if a package is already installed on Linux Ubuntu
Use this command to see if a package is already installed: apt list –installed | grep -i xyz Reference https://askubuntu.com/questions/17823/how-to-list-all-installed-packages
How to resize an Ubuntu partition on Google Cloud Engine
Background Google Cloud Engine makes it super simple to resize your disk and it can be done online. Step one is in the the user
How to install Wine on Ubuntu Linux / Linux Mint
Wine provides a software compatibility layer for Windows on Linux. It translates Windows API calls to POSIX calls. It works for a lot of Windows
How to add a default gateway and enable IP forwarding on Ubuntu
Summary This article show you how to add a default gateway to Ubuntu and how to enable IP forwarding. IP forwarding in this instance is
How to install and use the ‘dig’ command on Debian/Ubuntu
Introduction dig (domain information groper) is invaluable for name resolution queries. Although you could also use nslookup, dig just feels more modern and snappier. This