valyakuttan

See what's the block device

[yabbes@x220 ~]$ lsblk
NAME           MAJ:MIN RM   SIZE RO TYPE  MOUNTPOINT
sda              8:0    0 298,1G  0 disk
├─sda1           8:1    0   500M  0 part  /boot
└─sda2           8:2    0 297,6G  0 part
  └─lvm        254:0    0 297,6G  0 crypt
    ├─vg0-swap 254:1    0     4G  0 lvm   [SWAP]
    ├─vg0-root 254:2    0    46G  0 lvm   /

Run a local HTTP server with Docker 🐳

Serve your static website from localhost using Docker and Nginx.

By @arrested-developer

Why Docker?

Do you know the famous phrase "it works on my machine"?

Example list of first words to use in a git commit title

I like writing well-formed git commits that explain the intention behind why a code change was made.

Check out Chris Beams excellent How to Write a Git Commit Message if you haven't read it.

Anyway, for a project I've been working on I've gathered up 900+ commits that hold up a pretty high quality (except for one 😁). Let's look at some trends about these commits!

Most common first words in commit titles of a project

GnuPG Cheat sheet

Import and Backup secret keys

Import secret keys from a backup

$ gpg --decrypt backup_file.pgp | gpg --import

GPG - SSH setup

Generating the master key

Here we create the master key. We want only Certify capability: we use the master key only to create the subkeys, Sign - Encrypt - Authenticate capabilities will be assigned to the subkeys.

Run the following command to start the master key generation process. Select the set your own capabilities creation process (type 8)

  ▶ gpg --full-generate-key --expert

1. Install Terminus Font.

Info:
- https://www.archlinux.org/packages/community/any/terminus-font/
Command:
- ```
$ sudo pacman -S terminus-font
```

Arch Linux Full-Disk Encryption Installation Guide

This guide provides instructions for an Arch Linux installation featuring full-disk encryption via LVM on LUKS and an encrypted boot partition (GRUB) for UEFI systems.

Following the main installation are further instructions to harden against Evil Maid attacks via UEFI Secure Boot custom key enrollment and self-signed kernel and bootloader.

Preface

You will find most of this information pulled from the Arch Wiki and other resources linked thereof.

Note: The system was installed on an NVMe SSD, substitute /dev/nvme0nX with /dev/sdX or your device as needed.

Reverting a File to a Previous Commit

see all commits made to App.js.
```
$ git log -- oneline src/App.js
```
Use the SHA value to to revert to the desired version
```
$ git checkout 55a1dff -- src/App.js
```

How to install latest GHC 7.10.1 + cabal 1.22.3.0 from source on Debian Testing

ghc 7.10.1 installation

Debian prerequisites

    $ sudo apt-get install build-essential ca-certificates xz-utils -y
    $ sudo apt-get install libgmp10 libgmp-dev libffi-dev zlib1g-dev -y  
    $ sudo -K

	/*

	Goldbach's conjecture tested by a 47-state Turing machine

	Author: Jared Showalter

	If "a" and "i" were unbounded, this program would halt iff Goldbach's
	conjecture is false. Furthermore, the program structurally
	corresponds to a Turing machine with two symbols, one tape, and a
	small number of states. The array "a" corresponds to the tape (each