Reset Root Password on Ubuntu 20 Rumi, May 2, 2022 Step 1: Reboot your Ubuntu 20.04 LTS Operating System and load the GRUB menu by holding the Shift Key on Keyboard The first step is to start your computer machine and keep pressing the shift button on your keyboard until the GRUB menu appears, as shown in the picture below:… Continue Reading
Install and Setup ZFS on Debian 11 Rumi, April 16, 2022January 24, 2024 The full form of ZFS is Zettabyte File System. The ZFS filesystem is a 128-bit filesystem. The ZFS supported filesystem size is 3×10(to the poer 24) TB. You may never encounter such a big filesystem in real life. The ZFS filesystem was designed to keep and access an insane amount… Continue Reading
Fix ‘Another Update is Currently in Progress’ Error in WordPress Rumi, April 16, 2022 When you’re experiencing the another update in process error, you need to delete the ‘core_updater.lock’ file from your WordPress database. The easiest way to do this is by using phpMyAdmin. Note: Before you make changes to your database or WordPress theme files, it’s a good idea to create a full… Continue Reading
Upgrading WordPress Core Manually Rumi, April 14, 2022April 14, 2022 First create a full backup of your website. This is very important in case you make a mistake. Download the newest WordPress ZIP file from wordpress.org. Unzip the file into a directory on your local machine or in a separate directory on your website. Deactivate all of the plugins on… Continue Reading
Creating a Sudo User in Debian or Ubuntu Rumi, April 14, 2022 Creating a Debian Sudo User Creating a Debian sudo user involves a few simple steps. This procedure does not require you to edit the sudoers file. If you have an existing user that you want to grant sudo privileges, skip Step 2. Step 1: Log in as the Root User… Continue Reading
Add PHP 7.4 support on Virtualmin GPL on CentOS 7 Distribution Rumi, April 14, 2022 Install Remi Release repo and clear cache yum -y install https://rpms.remirepo.net/enterprise/remi-release-7.rpm && yum clean all Install PHP packages version 7.4 and/or 8.0 yum -y install php74-php-{cli,pdo,fpm,zip,gd,xml,mysqlnd,opcache,bcmath,imagick,mbstring} yum -y install php80-php-{cli,pdo,fpm,zip,gd,xml,mysqlnd,opcache,bcmath,imagick,mbstring} Configuring Individual Virtual Servers You can configure the PHP version being used for a specific Virtual Server by selecting Server Configuration… Continue Reading
Using NSLOOKUP to view DKIM records Rumi, April 14, 2022 NSLOOKUP is a quick and convenient way to verify that your DK/DKIM records are set up properly. The policy for DK/DKIM is a TXT record at this location: _adsp._domainkey.<domain.com> For the selector record you have to use: <selector>._domainkey.<domain.com> For example, do a NSLOOKUP for TXT at: c3po._domainkey.altn.com Open the Start… Continue Reading
A Presentation on Cloud Adoption for project managers with cyber security strategy Rumi, April 5, 2022April 6, 2022 It was a long presentation that I gave as a guest presenter to PMI Bangladesh chapter. The recording video is added- And for those who wish to have the the document to download can get it here. Cloud-Adoption-Project-Managers-1.3 Continue Reading
Remove Old Kernels of Debian/Ubuntu Rumi, April 1, 2022 To find out the current version of Linux kernel running on your system, use the following command. $ uname -sr Linux 4.12.0-041200-generic To list all installed kernels on your system, issue this command. $ dpkg -l | grep linux-image | awk ‘{print$2}’ linux-image-4.12.0-041200-generic linux-image-4.8.0-22-generic linux-image-extra-4.8.0-22-generic linux-image-generic Remove Old Unused Kernels… Continue Reading
Reboot Windows 10 using RDP Rumi, March 26, 2022 This article is for sysadmins who know better, wanting to Shut down or Restart (or even enter Sleep) over RDP anyway. Using Command Prompt Open a Command Prompt a. To initiate a Shut down, type: shutdown /s /t 0 then press Enter Continue Reading