2019

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linuxarchlinux

Wednesday 16 January 2019 (2019-01-16)

The rather unusual, opinionated and commented ArchLinux installation

First of all, this tutorial doesn't prevent you from following the ArchWiki - Installation guide, it is not standalone. 🔗Pre-installation 🔗First basic steps For those first steps, I think you are a

2018

0

security

Wednesday 19 December 2018 (2018-12-19)

Check SSH fingerprint

🔗Display the default fingerprint 🔗Of a key You can either use the public key or private key to obtain the fingerprint (default is SHA256 in base64). 1234$ ssh-keygen -lf ./id_ed25519256 SHA256:jISol

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misc

Monday 3 December 2018 (2018-12-03)

Remove EXIF metadata from pictures with exiftool

When taking a photo from your phone you don't want to share your position, right? After rendering a picture from a tool like Gimp or Photoshop you want it to be as light as possible but to keep a good

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securitylinux

Sunday 8 July 2018 (2018-07-08)

Block automated scanners from scanning a website

🔗Disclaimer This post describes how to block automated scanners from scanning a website. 🔗Requirements You will need: fail2ban nginx (another web server can work too but this will need some modific

2017

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security

Sunday 25 June 2017 (2017-06-25)

Client Side Certificate Authentication in Nginx with Elliptic Curve Cryptography

We will setup a client side certificate authentication in Nginx with Elliptic curve cryptography using ECDSA (curve secp384r1) for certificates and a self signed Certificate Authority (CA). Create Ser

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linuxarchlinux

Sunday 25 June 2017 (2017-06-25)

How to use ProtonVPN on Arch Linux

🔗Install the necessary packages Install openvpn if needed: 1# pacman -S openvpn --needed To prevent DNS leakage you'll need an additional package, for more info see Arch Linux Wiki. 🔗Using systemd &

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linuxarchlinux

Thursday 6 April 2017 (2017-04-06)

Install BlackArch Linux on top of ArchLinux without gnupg / behind a proxy

I assume your curl, git, environment variables are already configured to use a proxy. But often gnupg keyservers don't work behind a proxy even if gnupg is configured to use it. The solution is to avo

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linuxarchlinux

Tuesday 21 March 2017 (2017-03-21)

ArchLinux - Pacman error: $filename exists in filesystem

Before each update, check Archlinux news, there may be special instructions. When updating you system with # pacman -Syu you may sometimes encounter this error: 1234error: could not prepare transactio

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programmingruby

Monday 20 February 2017 (2017-02-20)

Ruby cheat sheet with examples

Take it easy Ruby! 🔗Basic concepts 🔗Hello World 1puts "Hello World!" 🔗Comments 123456# single line comment=begin Multi-lines comment=end 🔗Variables 12my_var = 42My_constant_var = 31337 🔗Shortha

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linux

Wednesday 8 February 2017 (2017-02-08)

Snapshot for KVM via libvirt with virsh

🔗Context I am using KVM, and use/manage my VMs with virt-manager. But I asked myself this question: how can create or revert some snapshot? I'm giving examples for qcow2 disk images and commands are