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Journalctl Cheat Sheet

Configuration

Permissions

To see messages from other users and the system as well as performing various log operations from a regular user add it to the group:

sudo usermod -aG systemd-journal $USER

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// MapComponent.js
import { useEffect, useRef } from 'react';

import L from 'leaflet';
import { MapContainer, TileLayer, Popup, Marker } from 'react-leaflet';
import { atom, useRecoilValue } from 'recoil';
import './MapComponent.css';
import TileSelector from './TileSelector';

L.Icon.Default.imagePath = 'https://unpkg.com/leaflet@1.5.0/dist/images/';

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How to save space on disk removing ArchLinux Pacman packages cache

1. Check out how many space is taken by Pacman packages cache

ls /var/cache/pacman/pkg/ | wc -l
# 13886
du -sh /var/cache/pacman/pkg/
# 61G	/var/cache/pacman/pkg/

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Add Git Branch Name to Terminal Prompt (Linux/Mac)

Open ~/.bash_profile in your favorite editor and add the following content to the bottom.

# Git branch in prompt.

parse_git_branch() {

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This is the United Nations World Population Prospects 2019 Dataset, cleaned and formatted as CSV.

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#!/bin/bash

scrot /tmp/screen.png

xwobf -s 11 /tmp/screen.png

i3lock --textcolor=ffffff00 --insidecolor=ffffff1c --ringcolor=ffffff3e --linecolor=ffffff00 --keyhlcolor=00000080 --ringvercolor=00000000 --separatorcolor=22222260 --insidevercolor=0000001c --ringwrongcolor=00000055 --insidewrongcolor=0000001c -i /tmp/screen.png

rm /tmp/screen.png

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Openbox
Tint2
Urxvt
lxappearance
breeze dark

for system-wide mouse configuration, one can edit /usr/share/icons/default/index.theme

tint2conf is the customizer
sudo xbps-query -Rs rxvt

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Installing Arch:


sudo vim /etc/pacman.conf
Update packages list: sudo pacman -Syy
run sudo pacman -Syu  before installing any software (to update the repositories first)

* Timing issue:
    - Change hardware clock to use UTC time:
        sudo timedatectl set-local-rtc 0

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Basic
=====

[Shift]+[Mod]+[Enter]   - launch terminal.

[Mod]+[b]               - show/hide bar.
[Mod]+[p]               - dmenu for running programs like the x-www-browser.
[Mod]+[Enter]           - push acive window from stack to master, or pulls last used window from stack onto master.

[Mod] + [j / k]         - focus on next/previous window in current tag.

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Arch Linux Installation Guide

This guide will show step-by-step how to Install Arch Linux on UEFI mode.

Table of Contents

• Bootable Flash Drive
• BIOS
• Pre installation
  • Set Keyboard Layout
  • Check boot mode
• Update System Clock