apt update && apt upgrade
apt install certbot python3-certbot-nginx
certbot --nginx
# choose your nginx.server
certbot certificates
systemctl status certbot.timer
cat /etc/cron.d/certbot
certbot renew --dry-run
nginx -t
service nginx restart
# keep calm & stay safe

php artisan config:publish cors

Warning: remote port forwarding failed for listen port 3002

# lsof -i :3002
kill $(lsof -t -i :3002)

alias port='lsof -i '
# Usage port :3002

... no space left on device ...
ls -lAFh /var/log
-rw-r-----  1 syslog            adm              42G Oct 22 14:06 syslog

sudo rm /var/log/syslog

sudo systemctl restart rsyslog

echo > /var/log/syslog

sudo apt install golang-go

go version

sudo apt remove golang-go
sudo apt remove --auto-remove golang-go
wget https://go.dev/dl/go1.23.2.linux-amd64.tar.gz
sudo tar -C /usr/local -xzf go1.23.2.linux-amd64.tar.gz
echo "export PATH=$PATH:/usr/local/go/bin" >> ~/.bashrc
source ~/.bashrc
go version

sudo apt-get install xcb libxcb-xkb-dev x11-xkb-utils libx11-xcb-dev libxkbcommon-x11-dev

package main

import (
  "fmt"
  "github.com/BurntSushi/xgb"
  "github.com/BurntSushi/xgb/xproto"
  "github.com/go-gl/gl/v4.1-core/gl"
  "github.com/go-gl/glfw/v3.3/glfw"
  "github.com/go-vgo/robotgo"
  hook "github.com/robotn/gohook"
  "log"
  "runtime"
)

func hideFromTaskbar(window *glfw.Window) {
  xConn, err := xgb.NewConn()
  if err != nil {
    log.Fatalln("Can\\'t connect to X server:", err)
  }
  defer xConn.Close()

  x11Window := window.GetX11Window()
  root := xproto.Setup(xConn).DefaultScreen(xConn).Root

  atomWmState, err := xproto.InternAtom(xConn, false, uint16(len("_NET_WM_STATE")), "_NET_WM_STATE").Reply()
  if err != nil {
    log.Fatalln("Can\\'t get _NET_WM_STATE:", err)
  }

  atomSkipTaskbar, err := xproto.InternAtom(xConn, false, uint16(len("_NET_WM_STATE_SKIP_TASKBAR")), "_NET_WM_STATE_SKIP_TASKBAR").Reply()
  if err != nil {
    log.Fatalln("Can\\'t get _NET_WM_STATE_SKIP_TASKBAR:", err)
  }

  changeState := xproto.ClientMessageEvent{
    Format: 32,
    Window: xproto.Window(x11Window),
    Type:   atomWmState.Atom,
    Data: xproto.ClientMessageDataUnionData32New([]uint32{
      1,
      uint32(atomSkipTaskbar.Atom),
      0,
      0,
      0,
    }),
  }

  err = xproto.SendEventChecked(xConn, false, root, xproto.EventMaskSubstructureRedirect|xproto.EventMaskSubstructureNotify, string(changeState.Bytes())).Check()
  if err != nil {
    log.Fatalln("Can\\'t send event:", err)
  }
}

echo "$USER ALL=(ALL) NOPASSWD: ALL" | sudo tee -a /etc/sudoers