rpm quick win – what installed specific package
Alex Problem: There is an package on the OS, but you dont know which package it was installed through. Example with ping on RHEL-9 First finding here the ping binary is…
k3s kubernetes homelab – initial start – Part 1
I would like to write about my homelab migration to k3s here in this blog. If you are not familiar with k3s, I highly recommend the excellent documentation at https://docs.k3s.io.…
Resolving Repeated sudo Password Prompts in Fish Shell on Ubuntu: A Linuxbrew Configuration Issue
If you’re a Linux user who enjoys the efficiency and power of the Fish shell (Friendly Interactive Shell), you may have run into an issue where you’re repeatedly asked to…
using tar – removing compression leftovers and more
A small but nice tip. Who doesn’t know it, you want to pack files on the system because they might take up too much space or or or or… Out…
nmap and certificate check
There are countless ways to get information about the certificates of a site. Such as using curl and then grep the information or processing it with awk. A very simple…
Basic Editing in Vim
Entering and Exiting Vim To start using Vim, open a terminal or command prompt and type “vim” followed by the filename you want to edit. If the file doesn’t exist,…
AWS Cloud Quest Game – Cloud Practitioner Badge
Since I am currently studying for the AWS Certified Cloud Practitioner certification, I looked around for suitable learning material.A very good source is AWS itself, namely Skillbuilder, where there are…
Linux Professional Institute (LPIC-1) – Linux Administrator
During my conversion as an IT specialist specializing in system integration, which took place from 2019 to 2021, I passed the two exams and received the Linux Professional Institute Level…
Exclude default PostgreSQL databases – postgres template0 template1
By default, PostgreSQL comes with three databases: <strong>postgres</strong>, <strong>template0</strong>, and <strong>template1</strong>. While these databases are useful for managing PostgreSQL itself, they may not be relevant most times to your application,…
How to use VIM – Command line mode
One of Vim’s key features is its ability to be used in command-line mode, which allows you to perform various operations on the text without using the traditional editing interface.…