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ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

You can get the list of installed codecs with:

Install Required libraries:

sudo apt-get update && sudo apt-get install imagemagick gs

create directory to test commands

mkdir -p pdf_conversion/{merged,split}
cd pdf_conversion

How to use matrix.org and vector.im as an IRC client

How to Join an IRC Channel on matrix.org

Join the room #freenode_<#channel>:matrix.org, replacing <#channel> with the name of the IRC channel. For example, in order to join the #prometheus IRC channel, join the room #freenode_#prometheus:matrix.org on matrix.org.

In vector.im, rooms can be joined with the directory symbol on the bottom left.

Create a Wi-Fi hotspot on Linux using `nmcli`

Original post : https://unix.stackexchange.com/a/310699

nmcli con add type wifi ifname wlan0 con-name Hostspot autoconnect yes ssid Hostspot
nmcli con modify Hostspot 802-11-wireless.mode ap 802-11-wireless.band bg ipv4.method shared
nmcli con modify Hostspot wifi-sec.key-mgmt wpa-psk
nmcli con modify Hostspot wifi-sec.psk "veryveryhardpassword1234"

	# Thanks to @danger89 and @Ilothar for updating the gist.
	# Set the name and the supported language of the project
	project(hello-world C CXX)

	# Set the minimum version of cmake required to build this project
	cmake_minimum_required(VERSION 3.10)

	# Use the package PkgConfig to detect GTK+ headers/library files
	find_package(PkgConfig REQUIRED)
	pkg_check_modules(GTK REQUIRED gtkmm-3.0)