jboner

Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference                           0.5 ns
Branch mispredict                            5   ns
L2 cache reference                           7   ns                      14x L1 cache
Mutex lock/unlock                           25   ns
Main memory reference                      100   ns                      20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy             3,000   ns        3 us
Send 1K bytes over 1 Gbps network       10,000   ns       10 us
Read 4K randomly from SSD*             150,000   ns      150 us          ~1GB/sec SSD

prwhite

# Add the following 'help' target to your Makefile
# And add help text after each target name starting with '\#\#'
 
help:           ## Show this help.
	@fgrep -h "##" $(MAKEFILE_LIST) | fgrep -v fgrep | sed -e 's/\\$$//' | sed -e 's/##//'
 
# Everything below is an example
 
target00:       ## This message will show up when typing 'make help'
	@echo does nothing

shamil

How to mount a qcow2 disk image

This is a quick guide to mounting a qcow2 disk images on your host server. This is useful to reset passwords, edit files, or recover something without the virtual machine running.

Step 1 - Enable NBD on the Host

modprobe nbd max_part=8

tuxfight3r

Bash Shortcuts

Moving

command	description
ctrl + a	Goto BEGINNING of command line

fernandezpablo85

How to create a maven repository for your github project step by step

Clone your project in a separate folder

(note: replace ORGANIZATION and PROJECT)

git clone git clone git@github.com:ORGANIZATION/PROJECT.git my-repository

Cd into it

ageis

security and hardening options for systemd service units

A common and reliable pattern in service unit files is thus:

NoNewPrivileges=yes
PrivateTmp=yes
PrivateDevices=yes
DevicePolicy=closed
ProtectSystem=strict

rueycheng

GNU Make Cheatsheet

Based on https://www.gnu.org/software/make/manual/html_node/Quick-Reference.html

Directives

Directive	Description
define variable define variable = define variable := define variable ::= define variable += define variable ?= endef	Define multi-line variables.
undefine variable	Undefining variables.

StevenACoffman

Unicode Character Look-Alikes

Original Letter	Look-Alike(s)
a	а ạ ą ä à á ą
c	с ƈ ċ
d	ԁ ɗ
e	е ẹ ė é è
g	ġ
h	һ

comp500

Big List of Modpack Things

Also see the Modrinth Awesome list, and a (probably somewhat outdated) list of curse modpack downloaders at https://gist.github.com/jikuja/f44533a16ad04624c3eb8e99e7a3e494/

This list is a bit outdated in places, but I'm still adding things here so that I don't forget them.

Distribution platforms

Name	Type	Number of mods/packs	Popularity (Similarweb rank)	Official launcher	Third-party support	Open Source backend	Author rewards
CurseForge	Public	31,000 mods; 38,000 modpacks	#1410	Yes	Many	No	Yes
Modrinth	Public	2000 mods	#79,182	In development	ATLauncher, packwiz, pacmc, modweaver	Yes	Planned

tkren

#!/usr/bin/env bash
#
# gpg-export-wkd.sh: Uses gnupg and sequoia-sq to generate a Web Key Directory.
#   See https://tools.ietf.org/html/draft-koch-openpgp-webkey-service-11 and
#   https://wiki.gnupg.org/WKD for details.
#
# Prerequisite: gpg and sq must be located through the PATH.
# Install sq with `crate install sequoia-sq`
# See also https://crates.io/crates/sequoia-sq
#