Ubuntu Linux related tutorial/FAQ

How to check running process in Ubuntu using command line

last updated April 17, 2019 in Linux, Ubuntu Linux

I am a new sysadmin for the Ubuntu operating system. How do I check running process in Ubuntu using the command line option?

Configure Ubuntu Pi-hole for Cloudflare DNS over HTTPS

last updated March 3, 2019 in Debian / Ubuntu, OpenVPN, Ubuntu Linux

I installed OpenVPN VPN solutions on Ubuntu for my businesses to secure all data communications. I also set up Pin-hole ad blocker on Ubuntu server along with OpenVPN. How do I force Pi-hole to use Cloudflare DNS over HTTPS (DoH) to increase my privacy and security by preventing eavesdropping and manipulation of DNS data by man-in-the-middle attacks?

How to check running process in Ubuntu Linux using command line

last updated January 5, 2019 in Linux, Ubuntu Linux

I am a new Ubuntu sysadmin for the Ubuntu Linux operating system. How do I check running process in Ubuntu Linux using the command line option?

How to view Linux kernel parameters for currently booted system

last updated December 21, 2018 in CentOS, Debian / Ubuntu, Linux, Suse, Ubuntu Linux

How do I display or view Linux kernel parameters for currently running/booted kernel? How can I see Linux kernel command line parameters?

How to install and configure memcached on Ubuntu Linux 18.04

last updated November 26, 2018 in Linux, Package Management, Ubuntu Linux

I would like to reduce the load on my MariaDB/MySQL/PostgreSQL server using memcached. How do I install and configure memcached server on Ubuntu Linux 18.04 LTS?

How to upgrade Ubuntu 16.04 to 18.04 LTS using terminal

last updated November 25, 2018 in Linux, Ubuntu Linux

I am using Ubuntu Linux 16.04 LTS on Lionde. How do I upgrade Ubuntu 16.04 to 18.04 LTS using terminal bash shell over ssh based session?

How to setup a UFW firewall on Ubuntu 18.04 LTS server

last updated November 24, 2018 in Iptables, Security, Ubuntu Linux

How do I setup a firewall with UFW (uncomplicated firewall) on an Ubuntu Linux 18.04 LTS server to restrict traffic on my personal Ubuntu web-server that hosts my cat’s blog? How do I set up a firewall with UFW on Ubuntu 18.04 LTS?

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