In this article you will learn how to fix the Linux error: GPT PMBR size mismatch will be corrected by write after executing fdisk command. The problem can happen when the partition table was set up for a smaller disk… Continue Reading
In this article you will learn how to resize Linux partition from Command Line on virtual machine (VMware, Proxmox, AWS, ..). Тhis example is applicable for increase only for NON LVM partitions. In our example we will use Debian, but… Continue Reading
In this article you will learn how to add new disk in Ubuntu 20.04, how to partition, format disk and mount new disk from command line. Finding the New Hard Drive in Ubuntu For this tutorial I attached to my… Continue Reading
In this article I will show Raspberry Pi 4 Ubuntu WiFi Setup from command line. Identify The WiFi Card Name In Raspberry Pi 4 Ubuntu Raspberry Pi 4 has hardware WiFi card already onboard, but you can add other USB… Continue Reading
In this article you will learn How to Allow SSH Root Login on Ubuntu 20.04 LTS Linux step by step. By default you can login as other user. SSH login as root disabled on Ubuntu for security reasons. Also By… Continue Reading
In this article I will show How To Check Ethernet Connection Speed in Linux using 3 different ways. Ethtool Show Speed ethtool is powerful utility for query or control network driver and hardware settings for wired Ethernet devices. To determine… Continue Reading
While trying add new WEB domain with SSL support or installing Let’s Encrypt SSL Certificate in Vesta / Hestia / MyVesta Control Panel yo may have receive an error “Error: Let’s Encrypt validation status 400”. That’s It! Discuss this topic… Continue Reading
In this article you will learn how to securely wipe hard drive Linux, also how to securely delete files in Linux. First you need found correct disk path to hard drive which you want securely wipe, list hard drives in… Continue Reading
In this article you will learn a couple of methods on how to fix Fail2ban High Memory Usage problem. There may be several reasons for Fail2ban consumption a very large amount of memory (in my case it was about 2,5… Continue Reading
In this article you will learn how to Fix Zabbix Warning: Lack of Free Swap Space, and manually clear swap memory in Linux. The problem has 3 solutions, create or increase swap space, increase server RAM, and finally we can… Continue Reading