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use std::io::prelude::*;
use std::process::{Command, Stdio};

fn main() {
    let mut child = Command::new("ffmpeg")
        // Overwrite file if it already exists
        .arg("-y")
        // Interpret the information from stdin as "raw video" ...
        .arg("-f")
        .arg("rawvideo")

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--[[

Prevent the screen from blanking while a video is playing.

This script is a workaround for the GNOME+Wayland issue documented in the
[Disabling Screensaver] section of the mpv manual, and depends on
gnome-session-inhibit (usually provided by the gnome-session package) to set up
the inhibitors.

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First, install arch-install-scripts:

sudo pacman -S --needed arch-install-scripts

Secondly, mount your partitions in all the internal hard drives.

Thirdly, generate and validate your config by piping it out to stdout:

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Hyperlinks (a.k.a. HTML-like anchors) in terminal emulators

[ Update 2020-05-31: I won't be maintaining this page or responding to comments anymore. The list of supporting software reflects the known state as of this date. ]

---

Most of the terminal emulators auto-detect when a URL appears onscreen and allow to conveniently open them (e.g. via Ctrl+click or Cmd+click, or the right click menu).

It was, however, not possible until now for arbitrary text to point to URLs, just as on webpages.

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Ctrl + Alt + Space

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// Compile with e.g. `gcc -o /tmp/eatmem /tmp/eatmem.c`

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#define DEFAULT_SLEEP_SECONDS 600
#define DEFAULT_ALLOC_MB 1024

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Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

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How do you POST a JSON file with curl??

You can post a json file with curl like so:

curl -X POST -H "Content-Type: application/json" -d @FILENAME DESTINATION

so for example:

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Arch Linux Pacman & Paru (Feature packed AUR helper)

Pacman (Official)

Easter egg

Edit /etc/pacman.conf:

Under the # Misc options section, remove the # in front of Color and add the line ILoveCandy. Because Pac-Man loves candy.

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docker logs nginx 2>&1 | grep "127." 

# ref: http://stackoverflow.com/questions/34724980/finding-a-string-in-docker-logs-of-container