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Install the virtualbox manually

sudo apt-get update  
sudo apt-get install virtualbox-6.1  

Sign the modules for secureboot

sudo -i  
mkdir /root/module-signing  
cd /root/module-signing  

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Nomes das Tabelas
SX1 Manutenção de Perguntas de parametrização (movimentações, consultas e relatórios)
SX2 Manutenção dos Arquivos
SX3 Manutenção dos Campos
SX4 Configuração de Agenda de Relatórios e Processos
SX5 Manutenção de Tabelas
SX6 Manutenção de Parâmetros
SX7 Manutenção de Gatilhos de Campos (SX3)
SX9 Manutenção de Relacionamento entre Arquivos (SX2)
SXA Manutenção de Pastas Cadastrais dos Arquivos (SX2)

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sudo -H gedit /etc/systemd/logind.conf
sudo restart systemd-logind
sudo service systemd-logind restart

or
IgnoreLid=true in /etc/UPower/UPower.conf
service upower restart

or
1.When on AC Power, do nothing when laptop lid is closed: 

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$ cat test.json
json='{ "timestamp" : 1484825894873, "test" : "test"}'

ab -c 10 -n 1000 -p  test.json -T application/x-www-form-urlencoded  https://example.com/test

#https://prabuddha.me/apache-bench-ab-post-json-api/

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install

apt install pavucontrol -y

discover the source

pactl list sources

enable

pactl load-module module-loopback source=alsa_input.pci-0000_00_1b.0.analog-stereo

disable

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Alpine, Slim, Stretch, Buster, Jessie, Bullseye qual a diferença ?

stretch/buster/jessie são releases do debian

Bullseye e Bookworm são versões de desenvolvimento, não estáveis

-slim são versões com o mínimo possivel para rodar o que é proposto no Dockerfile

-alpine são versões baseadas no sistema operacional Alpine (se for utilizar algumas compilações que dependem de glibc talvez queira olhar o musl nesse ambiente, pois é a biblioteca usada

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How to log real user’s IP address with Nginx in log files

How to log the real user’s IP instead of the proxy server?

You need use the ngx_http_realip_module module. It is used to change the client address and optional port to the one sent in the specified header fields. Edit your nginx.conf or default.conf file:

$ sudo vi /etc/nginx/conf.d/default.conf

And set the following two directives:

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version: '3.8'
services:
  docker_host_1:
    image: docker:dind
    privileged: true
    volumes:
      - docker_host_1_data:/var/lib/docker
    networks:
      - docker_network

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Adjusting child processes for PHP-FPM (Nginx)

Problem:

The following warning message appears in the logs:

[26-Jul-2012 09:49:59] WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 32 children, there are 8 idle, and 58 total children  
[26-Jul-2012 09:50:00] WARNING: [pool www] server reached pm.max_children setting (50), consider raising it  
It means that there are not enough PHP-FPM processes. 

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What Is SSHFS?

SSHFS stands for (Secure SHell FileSystem) client that enable us to mount remote filesystem and interact with remote directories and files on a local machine using SSH File Transfer Protocol (SFTP).

SFTP is a secure file transfer protocol that provides file access, file transfer and file management features over Secure Shell protocol. Because SSH uses encryption while transferring files over the network from one computer to another computer and SSHFS comes with built-in FUSE (Filesystem in Userspace) kernel module that allows any non-privileged users to create their file system without modifying kernel code.

In this article, we will show you how to install and use SSHFS client on any Linux distribution to mount remote Linux filesystem or directory on a local Linux machine.

Step 1: Install SSHFS Client in Linux Systems

By default sshfs packages does not exists on all major Linux distributions, you need to enable epel repository under your Linux systems to install sshfs w