kimus

UFW

I use Ubuntu’s Uncomplicated firewall because it is available on Ubuntu and it's very simple.

Install UFW

if ufw is not installed by default be sure to install it first.

soarez

How to setup your own CA with OpenSSL

For educational reasons I've decided to create my own CA. Here is what I learned.

First things first

Lets get some context first.

lrascao

dash_id=xxxx
api_key=xxx
app_key=xxx

# 1. export
curl -X GET "https://app.datadoghq.com/api/v1/dash/${dash_id}?api_key=${api_key}&application_key=${app_key}" > dash.json

# 2. edit dash.json
move "graphs", "title", "description" up one level in the json hierarchy, from being beneath "dash" to being at the same level

ammario

func ip2int(ip net.IP) uint32 {
	if len(ip) == 16 {
		return binary.BigEndian.Uint32(ip[12:16])
	}
	return binary.BigEndian.Uint32(ip)
}

func int2ip(nn uint32) net.IP {
	ip := make(net.IP, 4)
	binary.BigEndian.PutUint32(ip, nn)

flaviocopes

import "sort" 

ages := map[string]int{
	"a": 1,	
	"c": 3,	
	"d": 4,	
	"b": 2,
}

names := make([]string, 0, len(ages))

yunazuno

#include <uapi/linux/if_ether.h>
#include <uapi/linux/in.h>
#include <uapi/linux/ip.h>
#include <uapi/linux/tcp.h>

int drop_ipv4_tcp_80(struct xdp_md *ctx) {
  void *data = (void *)(long)ctx->data;
  void *data_end = (void *)(long)ctx->data_end;

  struct ethhdr *eth;

AjkayAlan

Setting Up WSL

Install A Distro:

1. Run the following in powershell as admin Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux

2. Install a distro (ex: Ubuntu 18.04 LTS - https://www.microsoft.com/store/apps/9N9TNGVNDL3Q)

3. Open your distro you installed via the start menu, let it setup

4. Update and upgrade

sudo apt-get update

carolynvs

[alias]
  wip = for-each-ref --sort='authordate:iso8601' --format=' %(color:green)%(authordate:relative)%09%(color:white)%(refname:short)' refs/heads
  

terdon

Running any intensive job immediately throttles the CPU to 400Mhz! I found this:

https://www.reddit.com/r/thinkpad/comments/pvb87e/thinkpad_p14s_gen_2_intel_fix_for_aggressive_cpu/

which sent me to https://forums.lenovo.com/t5/Other-Linux-Discussions/X1C6-T480s-low-cTDP-and-trip-temperature-in-Linux/m-p/4028489?page=40#5069052 which explained there are actual Fn keys for this!

Can you check something for me. Do:

cat /sys/devices/virtual/powercap/intel-rapl-mmio/intel-rapl-mmio:0/constraint_0_power_limit_uw