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@MohamedAlaa
MohamedAlaa / tmux-cheatsheet.markdown
Last active November 19, 2024 10:49
tmux shortcuts & cheatsheet

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname
@staltz
staltz / introrx.md
Last active November 19, 2024 18:00
The introduction to Reactive Programming you've been missing
@myusuf3
myusuf3 / delete_git_submodule.md
Created November 3, 2014 17:36
How effectively delete a git submodule.

To remove a submodule you need to:

  • Delete the relevant section from the .gitmodules file.
  • Stage the .gitmodules changes git add .gitmodules
  • Delete the relevant section from .git/config.
  • Run git rm --cached path_to_submodule (no trailing slash).
  • Run rm -rf .git/modules/path_to_submodule (no trailing slash).
  • Commit git commit -m "Removed submodule "
  • Delete the now untracked submodule files rm -rf path_to_submodule
@PurpleBooth
PurpleBooth / README-Template.md
Last active November 19, 2024 11:04
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

@haosdent
haosdent / x_layout.keylayout
Last active November 11, 2024 09:34
Mac OS X Keyboard layout file, works in 10.11
<?xml version="1.1" encoding="UTF-8"?>
<!DOCTYPE keyboard SYSTEM "file://localhost/System/Library/DTDs/KeyboardLayout.dtd">
<!--
Data generated Wed Mar 23 01:35:41 2022
Generated by kluchrtoxml_64 build 203
-->
<!--Last edited by Ukelele version 351 on 2022-03-23 at 01:45 (GMT+8)-->
@serefyarar
serefyarar / script.lua
Created June 24, 2016 19:04
redis wildcard mget
local arg = "your_key*"
local cKeys = redis.call("KEYS",arg);
local cValues = redis.call("MGET",unpack(cKeys));
local cSet = {};
for key,value in pairs(cKeys) do
cSet[key] = {cKeys[key],cValues[key]};
end
return cSet
@hivefans
hivefans / shell_output.go
Last active May 12, 2024 10:36
get the realtime output for a shell command in golang|-|{"files":{"shell_output.go":{"env":"plain"}},"tag":"bigdata"}
package main
import (
"bufio"
"fmt"
"io"
"os"
"os/exec"
"strings"
)
@arxdsilva
arxdsilva / working_directory.go
Last active February 12, 2024 13:30
How to get the current working directory in golang
package main
// More info on Getwd()
// https://golang.org/src/os/getwd.go
//
import(
"os"
"fmt"
"log"
)
@TeemuKoivisto
TeemuKoivisto / HADOOP-ON-K8S.md
Last active December 1, 2022 12:21
How to install Hadoop to your local Kubernetes cluster

How to install Hadoop on your local Kubernetes cluster

Okey this is not the easiest way of running Hadoop on your local computer and probably you should instead just install it locally.

However if you really insist doing this here's how:

  1. Install kubectl, minikube and Docker if you don't already have it. I recommend using package-manager like Chocolatey. Minikube should install with VirtualBox as default driver which I recommend. When starting minikube we should increase its memory limit since our Hadoop node's pods need at least 2GB: minikube --memory 4096 --cpus 2 start (minikube's default is 1GB). NOTE: actually the Hadoop cluster by default uses about 10GB in memory limits and about 3GB running memory. From what I looked my k8s will overprovision to 300% of its capacity limits but use far less.
  2. Install helm. Then run helm init.
  3. Now you
## Install perf in docker container
### ubuntu 18.4
### kernel 4.14.173-137.229.amzn2.x86_64
docker exec -it {containerid} sh
wget https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.14.173.tar.xz && tar -xf ./linux-4.14.173.tar.xz && cd linux-4.14.173/tools/perf/ && apt -y install flex bison && make -C . && make install
./perf
./perf list
./perf bench mem all