Destroy Linux operating system with fork bomb Rumi, January 20, 2024 If you don’t want to completely destroy your Linux system but just neutralize it, you can go with a fork bomb using the following command: :(){ :|: & };: This will create a process which will duplicate it self infinitely until the system crash. If you are in a situation… Continue Reading
Use sudo su to login without any password prompt Rumi, January 15, 2024 Step 1 Edit sudoers file with command visudo: $ visudo You should get something similar to this content: # # This file MUST be edited with the ‘visudo’ command as root. # # Please consider adding local content in /etc/sudoers.d/ instead of # directly modifying this file. # # See… Continue Reading
Disable gpgcheck while running updates Rumi, January 12, 2024 Problem Statement: # su -c ‘yum install *.rpm’ which produced a long list of packages and depchecks, apparently successfully, but then gave: Install 50 Package(s) Total size: 436 M Installed size: 436 M Is this ok [y/N]: y Downloading Packages: Package libobasis3.3-en-US-base-3.3.0-6.x86_64.rpm is not signed [dave at davehost RPMS]$ Resolution:… Continue Reading
reset root password on CentOS 7 Rumi, January 10, 2024 You need to have a console access for running this operation. 1. Inside java or HTML5 console, please reboot your server and wait for the GRUB menu 2. Inside the GRUB menu select your first entry and press “E” key to edit. 3. Find a line with ro and change it to rw Continue Reading
Install MySQL 5.7 on Ubuntu 20.04 Rumi, January 9, 2024 Prerequisites Linux servers running Ubuntu 20.04 root privileges Step 1 – Add MySQL APT repository in Ubuntu Ubuntu already comes with the default MySQL package repositories. In order to add or install the latest repositories, we are going to install package repositories . Download the repository using the below command:… Continue Reading
ZFS Manager Webmin Module Rumi, January 8, 2024January 8, 2024 I found this wonderful webmin module of ZFS Manager. Kinda love its feature and functions as it literally shortened the tedious siwtches and values of zfsmanager! I’m just quoting from the developer’s readme section down here- ZFS administration tool for Webmin This is in early development, not for production. That… Continue Reading
Install Jitsi on Debian 11 Rumi, January 7, 2024 This article will go through the installation and configuration of the Jitsi Video Conference on the latest Debian 11 Bullseye. At the end of this guide, you will be able to create a meeting using the Jitsi Video conference. Before you get started, ensure you’ve got the following requirements: Operating… Continue Reading
Nextcloud Upgrade Issue via Web Rumi, January 5, 2024January 5, 2024 My Nextcloud update via web was constantly failing. So looked for alternate CLI methods. Method#1 Using occ cli sudo -u www-data php ./occ upgrade Nextcloud or one of the apps require upgrade – only a limited number of commands are available You may use your browser or the occ upgrade… Continue Reading
Restore ZFS Pool and storage data Rumi, November 23, 2023 If the disks are recognized from your OS the command: zpool import should be enough to get the pool imported and visible in your current OS. You can check the status with command zpool status You can try to import it explicitly by name zpool import ZStore P.S. Do not… Continue Reading
Create a RAID array using with mdadm Rumi, November 23, 2023 mdadm (multiple devices admin) is an extremely useful tool for running RAID systems. It’s is a tool for creating, managing, and monitoring RAID devices using the md driver. It can be used as a replacement for the raidtools, or as a supplement. You can use whole disks (/dev/sdb, /dev/sdc) or individual partitions… Continue Reading