today's howtos

posted by Roy Schestowitz on Aug 15, 2023

• Changing how I use IP address with FreeBSD’s vnet – so IPv6 works

  The vnet (network subsystem virtualization infrastructure) on FreeBSD is both a blessing and a curse. For me, it isn’t working well with IPv6. I’ve hit issues with pf (since solved, I’m sure). It’s a useful feature but can be confusing. It helps to have lots of time to think about it and what you’re doing.

• Upgrading from a previous version of Pop!_OS

  Pop!_OS, developed by System76, is renowned for its user-friendliness and constant improvements, making upgrades a welcome event for its users. As with any operating system, keeping up-to-date ensures not only new features and smoother performance but also better security.

• 20 Essential Linux interview questions

  If you’re gearing up for a journey into the realm of Linux interviews, you’ve come to the right place. In this guide, we’ll be delving into the essential Linux interview questions that are your key to unlocking success.

• Complete Guide: Installing R and RStudio on Linux for Data Analysis

  R is a versatile programming language and environment designed specifically for data analysis and statistical computing, making it an incredible choice for data-driven work.

• How to Install AWStats with Apache on Debian 12

  AWStats (Advanced Web Statistics) is an open-source web analytics tool that analyzes and generates comprehensive reports about web server log files.

• Directory Deletion in Linux: Command-Line and GUI Methods Explained

  Are you a new user of Linux OR You are trying to delete a directory in Linux...

• How to fix "tasksel: apt-get failed (100)" error on Debian 12

  Tasksel is a command line app that you can use to install different packages on Debian 12, such as : web server, ssh server, Desktop environments and more.

• How to install Sublime Text on Ubuntu 23.04

  Sublime Text is a text editor app that you can use to code. Sublime Text, supports multiple programming languages, which means you can use it to code in any coding language that you are familiar with.

• Testing two 12TB drives to a Dell R730 on FreeBSD

  I’m ready to downsize. I’m going to replace knew with r730-03. The former has 20 5TB drives. I don’t need all that space now. I’ll settle for 12TB instead.

• How to Use lsblk Command in Linux – Beginner’s Guide

  The lsblk command in Linux is a useful command for administrators, which is used to list information about all available block devices.

• Ian Jackson: DKIM: rotate and publish your keys

  If you are an email system administrator, you are probably using DKIM to sign your outgoing emails. You should be rotating the key regularly and automatically, and publishing old private keys. I have just released dkim-rotate 1.0; dkim-rotate is tool to do this key rotation and publication.

  If you are an email user, your email provider ought to be doing this. If this is not done, your emails are “non-repudiable”, meaning that if they are leaked, anyone (eg, journalists, haters) can verify that they are authentic, and prove that it to others. This is not desirable (for you).

• Debian 11 to Debian 12 upgrade problems – Apache2 not running PHP(8.2) but output text of code

• Table Activity Insights: Determining Usage of Specific Tables in PostgreSQL

• The Last Touch: Knowing When a PostgreSQL Table Was Last Used

• Assessing Disk Space Consumption: Temporary Data Usage in PostgreSQL

• The Speed Factor: Understanding Why Queries Slow Down in PostgreSQL

• Real-Time Query Performance: Deep-Dive Analysis for PostgreSQL

• Bug Discovery and Reporting in PostgreSQL: A Comprehensive Guide

• Mastering Automatic Database Maintenance in PostgreSQL: A Detailed Guide

• Dealing with Database Bloat: How to Address Common PostgreSQL Issues

• A Guide to Clearing Outdated Prepared Transactions in PostgreSQL

• Preventing Auto-Freezing and Page Corruption in PostgreSQL: Effective Measures

• Hiding from history on Linux

  Linux shells like bash have a convenient way of remembering commands that you type, making it easy to run them again without having to retype them. Just use the history command (which is a bash built-in) and then use an exclamation point followed by the number shown in front of the command in the history command output that you want to rerun. Alternatively, you can back up to that command by pressing the up arrow key as many times as needed to reach that command and then press return. Don’t forget, though, that you can also set up commands you are likely to use often as aliases by adding a line like this to your ~/.bashrc file so that you don’t need to search for them in your command history.