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Multiplexing Access to Audio Hardware via a Single PulseAudio Server

The goal of this setup is to create a single pulseaudio service which has sole access to the audio hardware while providing a server for many clients to use. This is not using the system wide mode as it doesn’t run as root, nor does it use the --system flag.

One disadvantage of this arrangement is that the commands pacmd and pactl will no longer work when run as your user. Both rely on the user dbus session

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Table of Contents

• The main event loop

The main event loop

statusdir=$XDG_RUNTIME_DIR/statusbar
mkdir -pm0700 "$statusdir"

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:xdg-support: https://wiki.archlinux.org/index.php/XDG_Base_Directory
:xdg-spec: https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html
:fhs: https://en.wikipedia.org/wiki/Filesystem_Hierarchy_Standard
:madness: http://pub.gajendra.net/2012/09/dotfiles
:litter: https://www.reddit.com/r/linux/comments/971m0z/im_tired_of_folders_littering_my_home_directory/
:systemd: https://www.freedesktop.org/wiki/Software/systemd/
:systemd-fhs: https://www.freedesktop.org/software/systemd/man/file-hierarchy.html
:systemd-fhs-bin: https://www.freedesktop.org/software/systemd/man/file-hierarchy.html#~/.local/bin/

:toc: macro

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A Brief Tour of the Makepkg Process: What Makes a Pacman Package

Introduction

This is a terse document covering the anatomy of a package built for the pacman package manager.

The following example commands can mostly run verbatim to manually create a

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C99 List of Undefined Behavior

From N1256: (See http://port70.net/~nsz/c/c99/n1256.html#J.2)

• A "shall" or "shall not" requirement that appears outside of a constraint is violated (clause 4).
• A nonempty source file does not end in a new-line character which is not immediately preceded by a backslash character or ends in a partial preprocessing token or comment (5.1.1.2).
• Token concatenation produces a character sequence matching the syntax of a universal character name (5.1.1.2).
• A program in a hosted environment does not define a function named main using one of the specified forms (5.1.2.2.1).
• A character not in the basic source character set is encountered in a source file, except in an identifier, a character constant, a string literal, a header name, a comment, or a preprocessing token that is never converted to a token (5.2.1).
• An identifier, comment, string literal, character constant, or header name contains an invalid multibyte character or does not

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A Selected List of Additions and Changes Coming With POSIX Issue 8

Last major change: 10th March 2023

New Commands

• timeout
• realpath / readlink

Additions