ls
cd
ls
who
whoami
ls
cd
ls
ls -la
chmod -r log-privado-y-secreto.txt 
ls -la log-privado-y-secreto.txt 
chmod -x log-privado-y-secreto.txt 
vi log-privado-y-secreto.txt 
chmod +r log-privado-y-secreto.txt 
clear
ls
