How To

How to Find Out Who Rebooted Your Ubuntu Server (Step-by-Step Guide)

Short summary: Use built-in Linux tools (`who`, `last`, `journalctl`, `/var/log/auth.log`) and optional audit logs to identify when, why, and who…

2 weeks ago

📡 Getting Started with tcpdump: A Beginner’s Guide for Linux Sysadmins

As a Linux system administrator, understanding what happens on your network is crucial. One of the most powerful tools to…

1 month ago

How to Install Grub Customizer on Ubuntu 24.04, 22.04 or 20.04

Grub Customizer is a powerful graphical tool for managing and configuring the GRUB bootloader. It provides an easy-to-use interface for…

5 months ago

How to Blacklist and Whitelist Email or Domain in Zimbra 8

How to Blacklist and Whitelist Email or Domain in Zimbra 8, in the previous article discussed How to Block Email…

8 months ago

Generate Let’s Encrypt Certificate with DNS Challenge

Step 1 — Install Let’s Encrypt Certbot Let’s Encrypt provides CLI namely Certbot to generate the certificate sudo apt install certbot Step…

8 months ago

Set Up Apache Virtual Hosts on CentOS 8

The Apache web server is the most popular way of serving web content on the internet. It accounts for more…

10 months ago

Migrating from Zimbra to Zimbra (ZCS to ZCS)

There can be a number of reasons for migrating from one mail server to another, the commonest being “running low…

10 months ago

How to Change URL from HTTP to HTTPS on Laravel

Based on Solving my problem! Since the proxy uses HTTPS and Laravel uses HTTP Request as default you may try…

10 months ago

Installing Graylog Open on Ubuntu 22.04

This article is a walkthrough for installing “Graylog Open 6” and leverages the documentation at “https://go2docs.graylog.org/current/downloading_and_installing_graylog/ubuntu_installation.html” and “https://www.mongodb.com/docs/manual/tutorial/install-mongodb-on-ubuntu/”. We’re using…

11 months ago

How to stop all Docker Containers

To stop all Docker containers simply run the following command in your terminal: docker kill $(docker ps -q) How It Works The…

11 months ago

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