today's howtos

posted by Roy Schestowitz on Aug 25, 2023

• How to Customize LightDM with Themes and Backgrounds

  LightDM is one of the login screens that you can use on your Linux machine. It’s a robust and reliable program, and while it does a great job of getting you from login to the desktop, one could argue the visuals are a little bland. The following will show you how to customize LightDM with themes and backgrounds to dress up that dull look.

• How to Install and Configure Samba in Ubuntu

  Effortlessly sharing files among different systems over a network is a fundamental part of network management.

• Hunting Subdomains at DEF CON 31

  A contingent from DomainTools decided to tackle a more down-to-earth competition. When we saw the Recon-Aacharya Challenge to find subdomains, we couldn’t resist—this is the stuff we eat, sleep, and breathe around here! This contest was part of Recon Village (“An Open Space with Talks, Live Demos, Workshops, Discussions, and CTFs with a common focus on Reconnaissance.”) which makes sense, since enumerating infrastructure such as subdomains is a common form of both red and blue team reconnaissance. Other Recon Village items of note this year included a Jeopardy-style open source intelligence (OSINT) CTF with challenges around harvesting information and credentials from target organizations, finding password dumps, etc; and there were also a variety of fascinating talks and live demos.

• A Brief Story of Time and Timeout

  When working in a Linux terminal, you often encounter situations where you need to monitor the execution time of a command or limit its runtime. The time and timeout commands are powerful tools that can help you achieve these tasks. In this tutorial, we'll explore how to use both commands effectively, along with practical examples.

• One challenge in reducing TLS certificate lifetimes down to 90 days

  Back in March, the Chrome team said that they wanted to reduce the maximum TLS certificate duration down to 90 days (because I'm not always completely in touch with the TLS ecology, I only found out about this recently). In general I'm in favour of short TLS certificate lifetimes and in automation for TLS certificate renewals and deployment, so you might expect me to be all in favour of this. But I actually think that this proposal would cause real problems and get significant pushback from people.

• How to Use /proc File System to Monitor Your Linux System

  Today, we will delve into the contents of the /proc directory to develop a better understanding of its functionalities. It’s important to note that the /proc directory is a common feature across all Linux distributions, irrespective of their flavor or architecture.

  One misconception that we must immediately clarify is that the /proc directory is NOT a conventional file system in the traditional sense of the term.

• How to Install and Setup Zsh (Z Shell) in Fedora

  The command-line interface is a powerful tool for interacting with your Linux system to perform various tasks efficiently. The default shell in many Linux distributions, including Fedora, is Bash (Bourne Again Shell).

  There are alternative Linux shells that offer enhanced features, improved customization, and a more user-friendly experience. One such shell is Zsh, also known as the Z Shell.Table of ContentsToggleWhat is Zsh?Installing Zsh in Fedora SystemMaking Zsh as Default Shell in FedoraInstall Oh-My-Zsh in FedoraChoosing an Oh-My-Zsh Theme for FedoraAdding an Oh-My-Zsh Plugin for Fedora

• How to Set Filesystem (Disk) Quotas on Ubuntu

  Filesystem quota is a standard built-in feature found in Linux Kernel. Quotas determine the amount of space a file should have to support user activities. The disk quotas also limit the number of files a user can create on the system.

  Filesystems that support the quota system include xfs, ext2, ext4, and ext3 to mention a few. The assignment of quotas is specific to the filesystem and for each user. This article bears all you need to know about working with the quota filesystem in a multi-user Ubuntu environment.

• How to install Spotify on Debian 12

  Spotify is one of the most popular music streaming sites that you can play different kind of music.

  Browser is not the only option that you can use when it comes to listening music on Spotify on your Linux distro.

• How to Install Wireguard VPN on Ubuntu 22.04

  Wireguard is an open-source VPN protocol alternative to IPSec, IKEv2, and OpenVPN. Wiruguard is designed for Linux and Unix operating systems.

• Installing Nagios: Step-by-Step Guide to Get You Started

  Nagios is a powerful open-source monitoring system that helps IT professionals monitor their network infrastructure, servers, applications, and services. Its extensible nature and robust features make it a popular choice for maintaining the health and performance of various components in a networked environment.

• idroot

  • How To Install Netdata on Debian 12

    In this tutorial, we will show you how to install Netdata on Debian 12. 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.

  • How To Install OBS Studio on Fedora 38

    In this tutorial, we will show you how to install OBS Studio on Fedora 38. For those of you who didn’t know, OBS Studio, short for Open Broadcaster Software Studio, is a powerful open-source software designed for video recording and live streaming.

• How to Install FreeIPA Server with Docker on Debian 12

  FreeIPA is an open-source identity management solution for Linux/Unix operating systems. In this guide, you will install and set up the FreeIPA server on Debian 12 machine via Docker.

• How to Integrate Sudoers with FreeIPA Server

  Sudo is an application that allows you to get root or administrator privileges on Linux and Unix operating systems. In this tutorial, you will learn how to integrate Sudoers and FreeIPA with two scenarios.