Discover gists

Solution "Unable to boot the Simulator"

sudo mkdir /private/tmp

sudo chmod 1777 /private/tmp

Other basic command

xcrun

xcrun simctl list devices //to list all simulators

xcrun simctl delete // to delete specific device

How to setup next.js app on nginx with letsencrypt

next.js, nginx, reverse-proxy, ssl

1. Install nginx and letsencrypt

$ sudo apt-get update
$ sudo apt-get install nginx letsencrypt

Also enable nginx in ufw

Comparison table for ESP8266/ESP32/ESP32-S2/ESP32-S3/ESP32-C3/ESP32-C6

A minimal table to compare the Espressif's MCU families.

	ESP8266	ESP32	ESP32-S2	ESP32-S3	ESP32-C3	ESP32-C6
Announcement Date	2014, August	2016, September	2019, September	2020, December

Change Arc Browser Icon

A collection of commands that change the Arc Browser icon on macOS.

Commands

Theme	Command
Candy Arc	`defaults write company.thebrowser.Browser currentAppIconName candy`

Checking your Raspberry Pi's view of its power supply

Sometimes it seems like the first (and sometimes only) advice you get offered for almost any problem with a Raspberry Pi is "check your power supply". You think something like:

"hey, I'm using an official power supply sold as being matched with my Pi so how can there be any problem?"

You look up the specs then stick a controlled load across your supply and confirm that it can deliver the required number of Watts.

Yet your problems persist…

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

Ctrl-Key: ^[
Octal: \033
Unicode: \u001b
Hexadecimal: \x1B
Decimal: 27

Direct copy of pre-encoded file:

$ ffmpeg -i filename.mp4 -codec: copy -start_number 0 -hls_time 10 -hls_list_size 0 -f hls filename.m3u8

	;;; sow.el --- Variable commands for scrolling the other window.

	;; Copyright (C) 2016 Andreas Politz

	;; Author: Andreas Politz <politza@fh-trier.de>
	;; Keywords: extensions, frames

	;; This program is free software; you can redistribute it and/or modify
	;; it under the terms of the GNU General Public License as published by
	;; the Free Software Foundation, either version 3 of the License, or

	using System;
	using System.Collections.Generic;

	/// <summary>
	/// Représente les coordonnées d'une cellule dans une grille.
	/// </summary>
	public class CellCoordinates
	{
	public int X { get; set; }
	public int Y { get; set; }

	# Based on this answer: https://stackoverflow.com/a/61859561/1956278

	# Backup old data
	Rename-Item -Path "./data" -NewName "./data_old"

	# Create new data directory
	Copy-Item -Path "./backup" -Destination "./data" -Recurse
	Remove-Item "./data/test" -Recurse
	$dbPaths = Get-ChildItem -Path "./data_old" -Exclude ('mysql', 'performance_schema', 'phpmyadmin') -Recurse -Directory
	Copy-Item -Path $dbPaths.FullName -Destination "./data" -Recurse