Seafile with Raspberry PI: self-hosted and open source file&sync solution

As files in your devices increase, a common limitation is having a cloud storage to get your files securely stored and available for your access and collaboration. Common storage services (like Google Drive or One Drive) give you few space compared with modern needs and require a fee for bigger GigaBytes. Seafile with Raspberry PI can give a cheap solution with cross device clients

In this tutorial, I’m going to show you how to install and configure Seafile with Raspberry PI by using Docker, which makes far simpler the installation procedure.

Install Velociraptor on Linux

Similar to GRR, Velociraptor also allows for hunting across many thousands of machines. Inspired by OSQuery, Velociraptor implements a new query language dubbed VQL (Velociraptor Query Language) which is similar to SQL but extends the query language in a more powerful way. Velociraptor also emphasizes ease of installation and very low latency — typically collecting artifacts from thousands of endpoints in a matter of seconds.

How to Permanently Disable Swap in Linux

In this article we will learn How to Permanently Disable Swap in Linux. Swap space represents a physical memory page that lives on top of disk partition or a special disk file used for extending the RAM memory of a system when the physical memory fills up.

How to Setup Openshift Origin on CentOS 8

In this article we will learn How to Setup Openshift Origin on CentOS 8.

OpenShift is an open-source PaaS platform that allows you to deploy an application on the cloud. It supports many programming languages including, Python, PHP, Perl, Node.js, Ruby, and Java. You can also add support for other languages. It is specially designed for a high-availability and scalable application platform. Moreover, It provides an easy way to scale your application as per your demand with zero downtime. It provides a powerful web UI that helps you to monitor container resources, container health, and the IP address of nodes.

Install and configure Kernel Crash Dump on Centos 8

In this article we will learn how to Install and configure Kernel Crash Dump on Centos 8.

Kdump is a service providing a crash dumping mechanism. The service enables you to save the contents of the system’s memory for later analysis. kdump uses the kexec system call to boot into the second kernel (a capture kernel) without rebooting; and then captures the contents of the crashed kernel’s memory (a crash dump or a vmcore) and saves it. The second kernel resides in a reserved part of the system memory.

How to Install LibreWolf Browser on Ubuntu 20.04 LTS - Linux Shout

Learn the commands to install open source LibreWolf browser on Ubuntu 20.04 Focal Fossa LTS Linux using command terminal.

What is LibreWorf?

LibreWolf is an open-source browser based on Firefox. This means you will get the performance and stability of the popular Mozilla browser. Along with that, the key focus of the LibreWolf developers is to provide protection against tracking, fingerprinting techniques along with other few security improvements. It also aims to remove all the telemetry, data collection, and annoyances, as well as disabling anti-freedom features like DRM.

Jamie McClelland | LVM Cache Surprises

By far the biggest LVM Cache surprise is just how well it works.

Between 2010 and 2020, my single, biggest and most consistent headache managing servers at May First has been disk i/o. We run a number of physical hosts with encrypted disks, with each providing a dozen or so sundry KVM guests. And they consume a lot of disk i/o.

This problem kept me awake at night and made me want to put my head on the table and cry during the day as I monitored the output of vmstat 1 and watched each disk i/o death spiral unfold.

We tried everything. Turned off fsck’s, turned off RAID monthly checks. Switched to less intensive backup systems. Added solid state drives and tried to stragically distribute them to our database partitions and other read/write heavy services. Added tmpfs file systems where it was possible.

But, the sad truth was: we simply did not have the resources to pay for the infrastructure that could support the disk i/o our services demanded.

Then, we discovered LVM caching (cue Hallelujah). We starting provisioning SSD partitions to back up our busiest spinning disk logical volumes and presto. Ten years of agony gone like a poof of smoke!

I don’t know which individuals are responsible for writing the LVM caching code but if you see this: THANK YOU! Your contributions to the world are noticed, appreciated and have had an enormous impact on at least one individual.

Drop Schema Postgres

In this article, we will be discussing the deletion of schema from our database. Database Schemas are a group of objects of databases that hold almost every element that the database should have, like triggers, functions, tables, and predefined procedures. In PostgreSQL, only the owner or superuser may remove a schema. There are several checkpoints that we have to go through when we delete a schema; these checks will be discussed further in this article.

How to install Quadrapassel on a Chromebook - a Tetris Game

Today we are looking at how to install Quadrapassel, a Tetris game, on a Chromebook. Please follow the video/audio guide as a tutorial where we explain the process step by step and use the commands below.

How can we identify a RAM chip on the Raspberry Pi 4 device

The Raspberry Pi is a mini-computer board that contains RAM, a processor, and other peripheral device connections that are required by the personal computer. These boards were initially launched for the understanding of computer usage on the school teaching level but later on, these boards were used for different electronic projects.

The Raspberry Pi has launched different boards like Raspberry Pi 2 and Raspberry Pi 4 which have different technical specifications. In this write-up, we will understand the methods to identify the RAM chip on the Raspberry Pi board.

How To Install Drupal on AlmaLinux 8 - idroot

In this tutorial, we will show you how to install Drupal on AlmaLinux 8. For those of you who didn’t know, Drupal is an open-source and popular content management tool with a large, supportive community. It’s used by millions of people and organizations around the globe to build and maintain their websites.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you through the step-by-step installation of Drupal on an AlmaLinux 8. You can follow the same instructions for Fedora, RHEL, CentOS, and Rocky Linux distributions.

How to install Krita on Zorin OS 16 - Invidious

Copy Table From One Database to Another Postgres

Data in the PostgreSQL database management system is stored in the form of tables. Each table is created in the database. The record inside the database in the form of tables can be moved from one database to another and in the same database as well. This guide will cover some methodology of creating a new database and then copying the relation in one database to the new one.

To start the steps, open the PostgreSQL shell. It will demand the database name, username, and password for the verification. The password is a mandatory field to proceed further. After that, you are connected to the database created already.

Easily Run Windows Apps On Linux With Bottles - Invidious

Need to run Windows programs on Linux? Bottles can help with that! Bottles is a frontend to WINE. Choose between Gaming and Software environment based on the type of software you want to start. More advanced users can choose the Custom environment to configure the bottle on their own.

Install DigiKam 7.6.0 On Ubuntu / Linux Mint | Tips On UNIX

This tutorial will be helpful for beginners to download and install digiKam 7.6.0 on Ubuntu 20.04 LTS, Ubuntu 18.04, and Linux Mint 20.3.

digiKam is an advanced open-source photo management application written in Qt and it is available for Windows, Linux, and macOS. This application allows you to import, export, manage and edit the raw files.

Digikam team released its stable version 7.6.0 and released on 5th Mar 2022.