Skip to content

Instantly share code, notes, and snippets.

View meysam81's full-sized avatar
📝
Learning

Meysam meysam81

📝
Learning
127 followers · 313 following
View GitHub Profile
@jboner
jboner / latency.txt
Last active July 17, 2024 03:12
Latency Numbers Every Programmer Should Know
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
@pitch-gist
pitch-gist / gist:2999707
Created June 26, 2012 22:21
HTML: Simple Maintenance Page
<!doctype html>
<title>Site Maintenance</title>
<style>
body { text-align: center; padding: 150px; }
h1 { font-size: 50px; }
body { font: 20px Helvetica, sans-serif; color: #333; }
article { display: block; text-align: left; width: 650px; margin: 0 auto; }
a { color: #dc8100; text-decoration: none; }
a:hover { color: #333; text-decoration: none; }
</style>
@jctosta
jctosta / screen_cheatsheet.markdown
Last active July 17, 2024 07:07
Screen Cheatsheet

Screen Quick Reference

Basic

Description Command
Start a new session with session name screen -S <session_name>
List running sessions / screens screen -ls
Attach to a running session screen -x
Attach to a running session with name screen -r
@dnozay
dnozay / 1_tox.ini
Created October 23, 2014 18:20
tox + coverage : getting combined python code coverage.
[testenv]
deps=coverage
commands =
coverage erase
coverage run setup.py test
coverage report --omit='.tox/*'
coverage html --omit='.tox/*'
@dedunumax
dedunumax / Multi-node-Vagrantfile
Last active July 30, 2023 10:20
Multi node sample vagrant file.
Vagrant.configure("2") do |config|
config.vm.define "master" do |master|
master.vm.box = "ubuntu/trusty64"
master.vm.hostname = "master.local"
master.vm.network "private_network", ip: "192.168.2.2"
end
config.vm.define "slave1" do |slave1|
slave1.vm.box = "ubuntu/trusty64"
slave1.vm.network :private_network, ip: "192.168.2.3"
@roblayton
roblayton / Vagrantfile
Created June 27, 2015 22:46
A Vagrant multi-machine cluster using a loop
# -*- mode: ruby -*-
# vi: set ft=ruby :
VAGRANTFILE_API_VERSION = "2"
cluster = {
"master" => { :ip => "192.168.33.10", :cpus => 1, :mem => 1024 },
"slave" => { :ip => "192.168.33.11", :cpus => 1, :mem => 1024 }
}
@PurpleBooth
PurpleBooth / README-Template.md
Last active July 17, 2024 03:47
A template to make good README.md

Project Title

One Paragraph of project description goes here

Getting Started

These instructions will get you a copy of the project up and running on your local machine for development and testing purposes. See deployment for notes on how to deploy the project on a live system.

Prerequisites

@mafonso
mafonso / list-all-access-keys.sh
Last active October 10, 2023 05:19
List Access Keys for all IAM users
for user in $(aws iam list-users --output text --no-cli-pager | awk '{print $NF}'); do
aws iam list-access-keys --user $user --output text --no-cli-pager
test $? -gt 128 && exit
done
@ygotthilf
ygotthilf / jwtRS256.sh
Last active July 14, 2024 00:03
How to generate JWT RS256 key
ssh-keygen -t rsa -b 4096 -m PEM -f jwtRS256.key
# Don't add passphrase
openssl rsa -in jwtRS256.key -pubout -outform PEM -out jwtRS256.key.pub
cat jwtRS256.key
cat jwtRS256.key.pub
@jonsuh
jonsuh / .bash_profile
Last active February 16, 2024 17:17
Bash echo in color
# ----------------------------------
# Colors
# ----------------------------------
NOCOLOR='\033[0m'
RED='\033[0;31m'
GREEN='\033[0;32m'
ORANGE='\033[0;33m'
BLUE='\033[0;34m'
PURPLE='\033[0;35m'
CYAN='\033[0;36m'