kanguki

go test -run=. -bench=. -benchtime=5s -count 5 -benchmem -cpuprofile=cpu.out -memprofile=mem.out -trace=trace.out ./package | tee bench.txt
go tool pprof -http :8080 cpu.out
go tool pprof -http :8081 mem.out
go tool trace trace.out

go tool pprof $FILENAME.test cpu.out
# (pprof) list <func name>

# go get -u golang.org/x/perf/cmd/benchstat
benchstat bench.txt

kanguki

## -z is optional. Traffic sent will be less, but CPU overhead will be higher.

# On the receiving end do:
nc -vl 12345 | tar xzv

# And on the sending end do:
tar czvf - * | nc -v <remote_host> 12345

kanguki

#!/bin/sh

# strict mode: error if commands fail or if unset variables are used
set -eu

if [ "$#" -lt 2 ]
then
    echo Usage: `basename $0` "<limit> <command>..."
    echo or: `basename $0` "<memlimit> -s <swaplimit> <command>..."
    exit 1

kanguki

Security Advisories / Bulletins / vendors Responses linked to Log4Shell (CVE-2021-44228)

Errors, typos, something to say ?

• If you want to add a link, comment or send it to me
• Feel free to report any mistake directly below in the comment or in DM on Twitter @SwitHak

Other great resources

• Royce Williams list sorted by vendors responses Royce List
• Very detailed list NCSC-NL
• The list maintained by U.S. Cybersecurity and Infrastructure Security Agency: CISA List

kanguki

Node.js Deployment

Steps to deploy a Node.js app to DigitalOcean using PM2, NGINX as a reverse proxy and an SSL from LetsEncrypt

1. Sign up for Digital Ocean

If you use the referal link below, you get $10 free (1 or 2 months) https://m.do.co/c/5424d440c63a

2. Create a droplet and log in via ssh

I will be using the root user, but would suggest creating a new user

kanguki

package main

import (
	"bufio"
	"log"
	"net/rpc"
	"os"
)

func main() {