create file into home with name "Results" be the result of command
> add with trucate
>> append
2> add error
2>> append the error
>& both without append
list [aA]*.gz into /etc
Ls /etc/[aA]*.gz
list *conf into /etc
ls -> /etc/[aA]*
ls - Comandos(programas - embutido ou externo)
/etc/[aA]* - argumento(objeto de processamento)
ls -a
< diretório
