Useful commands

Echo a variable value

echo $variable

Export a variable

export $variable

Create a new file

open file (editor bonito)
nano file (vi :( )
touch file (criar arquivo)
chmod 7555 (permissão total em um arquivo)

Create and use ~/.bash_profile file to alias and variables
Create directories

mkdir -p (com subdiretorios)
mkidr (precisa todo o caminho existir)

Zip a file with pass

zip -er output-file-name.zip directory-source-path