MacOS - mostrando arquivos escondidos

 Command + Shift + . 

Python instalando as dependências do requirements.txt

 python3 -m pip install -r requirements.txt

Python - ativando um ambiente virtual

 source env/bin/activate

Python criado um ambiente virtual

 python3 -m venv /path/to/new/virtual/environment

Python gerando o arquivo requirements.txt

pip3 freeze > requirements.txt 

Criando um atalho Desktop no Linux para o Keepass (

mkdir -p ~/.local/share/applications

cd ~/.local/share/applications

gedit keepass-2.48.1.desktop

[Desktop Entry]

Categories=Security;

Name=Keepass-2.48.1

Comment=Password Manager

Exec=mono /home/user/KeePass-2.48.1/KeePass.exe

Icon=/home/user/Softwares/KeePass_icon.png

MimeType=x-application/kdbx

StartupNotify=true

Type=Application

QEMU - Comando para rodar uma máquina Virtual

qemu-system-x86_64 ubuntu18.img -m 4096M -smp 2 -enable-kvm -cpu host

4GB ram - 2 núcleos