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>;

varqox

#pragma once

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

namespace meta {

template <char... chars>

varqox

#!/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/^\s*id [0-9]*, type .*node\.name = "\([^"]*\)".*/\1/' | (grep -vP "^($1)$" || true)
}

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

selected_names_regex=''

varqox

#!/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 @)

varqox

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.

wpa_supplicant

1. Edit connection and set:

• Authentication to Protected EAP (PEAP)
• Anonymous identity to [email protected]
• Domain to eduroam.uw.edu.pl
• CA certificate to file located at /etc/ssl/certs/Comodo_AAA_Services_root.pem
• Uncheck No CA certifcate is required

varqox

#!/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' &&

varqox

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

varqox

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

varqox

// 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>

varqox

#!/bin/sh
# Place in file: /etc/NetworkManager/dispatcher.d/pre-up.d/wlan_auto_block.sh
# Make the file safe for execution: sudo chmod 744 /etc/NetworkManager/dispatcher.d/pre-up.d/wlan_auto_block.sh

if [ "$1" = "enp3s0" ]; then
    rfkill block wifi # rfkill is used for unblocking, so we have to use it for blocking
fi