Category: Linux

Linux is a powerful, open-source operating system known for its stability, security, and flexibility, widely used in servers, development, and embedded systems

How to perform SSH key-based authentication in Linux

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How to perform SSH key-based authentication in Linux

SSH stands for Secure Shell and it is used to securely communicate between two host machines over an insecure network. It can be used for file transfer, accessing a remote machine application tunneling. Basically, SSH is the Linux equivalent for Windows Remote Desktop Protocol. Please see Synology Surveillance365: Cloud-Based Camera Management Without an On-Premises Surveillance…

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Linux

Installation and configuration of Cockpit on CentOS Linux

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Installation and configuration of Cockpit on CentOS Linux

Cockpit is a web-based app/interface that is used to administer and monitor servers and system resources. Two very fantastic things about cockpit is that: a) it has no locked-in feature, meaning you can use it alongside other similar tools b) when it is idle or not in use, it uses no memory neither does it…

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Linux

Creating an offline local repository in Linux

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Creating an offline local repository in Linux

Repositories can be defined as a box where your work tools are kept. It is a store for packages/applications/software that enhance your Linux experience. There are repositories you can access online, however, within your Linux OS DVD is a rich repository that you do not require internet access to use. This tutorial will work you…

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Linux

Adding a new partition to an existing Linux server

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Adding a new partition to an existing Linux server

Suppose you have an up and running Linux server and you have a need for a new partition, here is an easy way to do that from the command line. For this demonstration, I am using a CentOS. Read on to learn how to add a new partition to an existing Linux server. Error code…

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Linux

How to encrypt a partition with Cryptsetup

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How to encrypt a partition with Cryptsetup

Cryptsetup is a utility used to conveniently set up disk encryption based on the DMCrypt kernel module. These include plain dm-crypt volumes, LUKS volumes, loop-AES, TrueCrypt (including VeraCrypt extension), and BitLocker formats. LUKS is the standard for Linux hard disk encryption. Here are some interesting articles: How to add a new partition to an existing Linux…

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Linux

Mounting remote directory using sshfs

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Mounting remote directory using sshfs

SSHF provides a secure way to access remote machines on the fly via the Secure Shell File Transfer Protocol (SFTP). It stands for Secure Shell File System and it is a software developed for use on Linux distributions. Please see how to perform In-place upgrade of Veeam Recovery Orchestrator to version 13.1, How to build and deploy…

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Create a Bootable USB Drive Using dd Command on Linux

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Create a Bootable USB Drive Using dd Command on Linux

In this article, you will learn how to Create a Bootable USB Drive Using dd Command on Linux. As a server administrator who wants to run an operating system directly or install a new operating system. You will need a bootable USB drive. And as you know the CLI is more powerful than the GUI,…

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Linux

[MAILX ERROR: STATUS=BOUNCED] Fixing Mailx error when sending emails from Command line

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[MAILX ERROR: STATUS=BOUNCED] Fixing Mailx error when sending emails from Command line

Mailx is an intelligent mail processing system, which has a command syntax reminiscent of ed(1) with lines replaced by messages. It is based on Berkeley Mail 8.1, is intended to provide the functionality of the POSIX mailx command, and offers extensions for MIME, IMAP, POP3, SMTP, and S/MIME. In this article, we will learn how to fix “[MAILX ERROR: STATUS=BOUNCED]…

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Linux

How to setup SELinux on a Linux server

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How to setup SELinux on a Linux server

Security-Enhanced Linux (SELinux) is a security architecture for Linux systems that allows administrators to have more control over who can access the system. It was originally developed by the United States National Security Agency (NSA) as a series of patches to the Linux kernel using Linux Security Modules (LSM). Please see Veeam ONE 13.1.0.7034 Upgrade: Complete…

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Linux

How to install and configure Jitsi video conferencing server on Ubuntu

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How to install and configure Jitsi video conferencing server on Ubuntu

In this article, we will discuss how to install and configure Jitsi video conferencing server on Ubuntu. Jitsi is a free open-source multi-platform voice, videoconferencing, and instant messaging applications for the web platform, Windows, Linux, macOS, etc. This application is similar to Cisco Meet, Google Meet, and Zoom video conferencing. You may also be interested…

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Linux

The package python-virtualenv has no installation candidate error

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The package python-virtualenv has no installation candidate error

If you are unable to generate an SSL certificate with Let’s Encrypt on Ubuntu 20.04, follow the steps below. Please see Using Prometheus for Monitoring, How to Configure Azure Monitor for VMs on Azure Stack Hub, how to Install, configure Prometheus for Monitoring on a Linux Server, How To Configure VM Update Management on Azure…

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Linux

How to install Mattermost on Ubuntu and Debian

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How to install Mattermost on Ubuntu and Debian

Mattermost is designed as an internal chat tool for organizations and markets itself as an open-source alternative to Slack and Microsoft Teams. The new feature release offers integration with enterprise tools such as Office 365 and Active Directory and an improved end-user experience for search and session management. Please see the following guides on how…

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Linux

How to fix “Job for Mattermost service failed” error

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How to fix “Job for Mattermost service failed” error

Mattermost is an enterprise grade, instant messaging platform, an open-source self-hosted Slack alternative. It is written in Golang and React and can use MySQL or PostgreSQL as a database backend. Please see the following guides on how to install and configure Ubuntu Linux, how to install the Windows Subsystem for Linux (WSL) on Windows Server…

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Linux