Krzysztof Małysa varqox

Solution to Rust errors of kinds:

implementation of Fn is not general enough (works with FnMut and FnOnce as well)
lifetime may not live long enough

use std::future::Future;

trait Callback<Arg, Res> {
    type Output: Future<Output = Res>;

Introduction

This tutorial covers using NetworkManager with either wpa_supplicant or IWD backend. If you did not heard of IWD, it is propbable your NetworkManager uses wpa_supplicant.

UW authorization server uses DSK-NET CA certificate that is self-signed, so we need to specify it manually.

wpa_supplicant

Download the DSK-NET CA certificate:

curl https://it.uw.edu.pl/pl/uslugi/UslugiInternetWiFiEduroam/dsk_net_ca.crt | sudo tee /etc/dsk_net_ca.crt

Before rebooting after making fresh Arch installation

make sure to install grub using grub-install and configure it properly using grub-mkconfig -o /boot/grub/grub.cfg (for uefi it is not so easy), but before running grub-mkconfig install intel-ucode or amd-ucode
install networkmanager vim htop net-tools wireless_tools # net-tools for ifconfig, wireless_tools for iwconfig
remember to configure pacman mirrors properly see /etc/pacman.d/mirrorlist
reboot

On a fresh Arch installation

systemctl enable --now NetworkManager
use nmtui to connect to internet
install git man-pages procps-ng # procps-ng for pkill

How to record multiple applications and microphone into one audio file on Linux

Step 0. Terminology

Sinks are for output, sources are for input. To stream source to sink a loopback must be created. More shall you find there.

Step 1. Create output sink that will be recorded

Our output sink will be named recording.

pacmd load-module module-null-sink sink_name=recording sink_properties=device.description=recording

	#!/bin/bash

	#set -exuo pipefail
	shopt -s expand_aliases

	function safe_function {
	echo "$@"
	echo "sf: ${BASH_LINENO[0]}"
	sed -n "${BASH_LINENO[0]},/^}/p" "${BASH_SOURCE[1]}"
	}

	#pragma once

	// #include <simlib/meta/concated_to_cstr.hh>
	#include <array>
	#include <cstddef>
	#include <utility>

	namespace meta {

	template <char... chars>

	#!/bin/bash
	set -euo pipefail

	list_sinks() {
	pw-cli list-objects Node \| grep -P '^\s+id \|^\s+node\.name\|^\s+media\.class = "Audio/Sink"' \| grep 'media\.class' -B 2 --no-group-separator \| paste -sd' \n' \| sed 's/^\sid [0-9], type .node\.name = "\([^"]\)".*/\1/' \| (grep -vP "^($1)$" \|\| true)
	}

	pactl unload-module module-combine-sink 2> /dev/null

	selected_names_regex=''

	#!/bin/bash
	set -exuo pipefail

	rm -rf sim-project
	git init sim-project
	cd sim-project

	git commit -m 'Initial commit' --allow-empty
	INITIAL_COMMIT=$(git rev-parse @)

	#!/bin/sh
	set -e

	cd -P -- "$(dirname -- "$0")" # chdir to script directory

	out_file="$HOME/backup/$(echo ${PWD#$HOME/} \| sed 's@/@,@g').tar.zst"

	((git ls-files -z --cached --recurse-submodules 2> /dev/null &&
	git ls-files -z --others --exclude-standard &&
	PROJECT_DIR=$PWD git submodule foreach --quiet 'git ls-files -z -o --exclude-standard \| while read -d "" x; do echo -n "${PWD#$PROJECT_DIR/}/$x"; echo -ne "\0"; done' &&

	// Krzysztof Małysa
	#include <assert.h>
	#include <errno.h>
	#include <math.h>
	#include <signal.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <sys/time.h>
	#include <sys/types.h>
	#include <sys/wait.h>