Linux Howto’s for System Administrations
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Let us see how to configure the Let’s Encrypt email notification when a TLS/SSL cert is skipped, renewed, or an error is created by “acme.sh” client so developers or sysadmin …
Git is a distributed version control system. To install git, type apk add git command on Alpine Linux. Love this? sudo share_on: Twitter – Facebook – LinkedIn – Whatsapp – …
Here is a quick tip that explains how to add a Mastodon verification link for the Discourse forum. Love this? sudo share_on: Twitter – Facebook – LinkedIn – Whatsapp – …
I have a tutorial that explains the basics of the SSH client configuration file and some of the most common configuration options for Linux and Unix developers or sysadmin. In …
FreeBSD default comes with a drill command to see information about DNS. The userspace tools for FreeBSD come from the latest version of the BIND-TOOLs package. It includes delv, dig, …
A Ubuntu 22.04 LTS comes with UFW (uncomplicated firewall) that protects the desktop or server against unauthorized access. UFW is easy to use frontend app for a Linux packet filtering …
So like many solo developers, I am tight on resources, especially money-wise. I have two AWS EC2 VMs running as WireGuard VPN on Amazon Linux for personal usage, and another …
Sometimes you need to use the ls command on your Linux or Unix machine and match the pattern, interpreting upper- and lowercase letters as the same. In other words, I …
The iptables and ip6tables commands are used to set up a Linux firewall. However, many new Linux sysadmins and users find it challenging to use iptables. Hence, the ufw program …
While looking into the nginx PHP error log file fixing unrelated issues, I noticed I was spammed with the following message: [28-Jul-2022 10:27:13 UTC] PHP Warning: Constant ABSPATH already defined …