Tag "linux"

Use Archlinux as your pentest distribution

Often pen-tester/security expert/hacker use Kali Linux or Parrot as their distro of choice. While they are great, I use Archlinux as my daily driver. Thus I want to have the same toolset as these distros installed and configured on my Archlinux

Posted September 19, 2021 by Adrian Wyssmann ‐ 2 min read

Notifications for failing Systemd services

When systemd services fail you usually don't really notice it unless it's a critical service. However there may be situations where it would be nice that you are mare aware of failing services.

Posted July 16, 2021 by Adrian Wyssmann ‐ 3 min read

How I manage my dotfiles

It is common practice to track dotfiles with a version control system like Git and to synchronize them across various hosts. There are various approaches, so I would like to tell you how I do it

Posted July 15, 2021 by Adrian Wyssmann ‐ 4 min read

Packet filtering in Linux - iptables, nftables and firewalld

Packet filtering is essential for network security and Linux offers this out of the box. There are different possibilities like iptables, nftables or firewalld, and a basic understanding of these is very useful.

Posted July 9, 2021 by Adrian Wyssmann ‐ 8 min read

Convert Manjaro Linux back to Arch Linux

Manjaro is e very popular distribution based on Arch. I tried it for several months ultimately decided to switch back to pure Arch. But how to do so, without a complete new installation?

Posted May 7, 2021 by Adrian Wyssmann ‐ 6 min read

Flameshot: A cool tool to make screenshots under Linux

Writing technical blogs often requires to do screenshot, where you may also want to highlight stuff of even obsfucate sensitive data.

Posted May 5, 2021 by Adrian Wyssmann ‐ 2 min read

Create an encrypted container in Linux

In case you have sensitive files which you want to additionally protect, you could add the to a zip file and encrypt the zip file. Or you might as well use an encrypted container

Posted May 5, 2021 by Adrian Wyssmann ‐ 2 min read

Automated OS update with kured for servers running k8s

If you are running a bare-metal cluster you probably run kubernetes on top of some linux os, these systems have to be regularly updated. But an update means sometimes that you have to reboot your servers. This also means during a reboot that particular node is node available to schedule workload.

Posted April 20, 2021 by Adrian Wyssmann ‐ 6 min read

How to know when your Linux system requires a reboot

When you manage Linux systems it's usually pretty clear how to reboot a system. But do you know how to check whether a system requires a reboot? Cause you don't want to reboot a system if it is not necessary

Posted April 20, 2021 by Adrian Wyssmann ‐ 2 min read

Linux Presentation Day (LPD)

Did you ever heard of Linux Presentation Day (LDP). If not, I will tell you about.

Posted April 16, 2021 by Adrian Wyssmann ‐ 2 min read

How to get a time difference of two log entries

I recently was tasked with a small problem on how to get a time difference of two log entries

Posted March 23, 2021 by Adrian Wyssmann ‐ 5 min read

How to rescue data from windows

My son has a Surface Go Tablet which suddenly stopped booting. Even after trying to uninstall patches etc. I could not bring it back, so I decided to help him to get the data from the tablet, so he can use it.

Posted March 13, 2021 by Adrian Wyssmann ‐ 3 min read

My Cheatsheets - Update

I've update the collection of my personal cheatsheets - you can find them also on the top-left menu

Posted April 13, 2020 by Adrian Wyssmann ‐ 1 min read

Cheatsheet vi

Posted March 8, 2019 by Adrian Wyssmann ‐ 1 min read

Unattended Installation of Linux and Windows

Unattended installation is the possibility to install an operating system without human interaction. Principally it is the same for Windows and Linux: An "answer file" which describes the configuration is provided as an input for the installer. These "answer files" provide any kind of setup options including how to partition disks and what packages/features to install.

Posted April 12, 2017 by Adrian Wyssmann ‐ 4 min read

Windows Subsystem for Linux (WSL)

Posted December 7, 2016 by Adrian Wyssmann ‐ 9 min read

Setup Arch Linux on my new Acer Aspire V7 Nitro

Posted November 25, 2016 by Adrian Wyssmann ‐ 9 min read

.Net on Linux

.net core seems promising and can be used on linux as well. Let's have a look.

Posted September 15, 2016 by Adrian Wyssmann ‐ 2 min read

Record your console session

Posted August 8, 2016 by Adrian Wyssmann ‐ 1 min read

Missing Languages in your Linux Distribution

Posted August 3, 2016 by Adrian Wyssmann ‐ 1 min read

Current Date on Shell

Posted August 1, 2016 by Adrian Wyssmann ‐ 1 min read