[guest@thobias ~]$ cd Programas_old
[guest@thobias ~/Programas_old]$
[guest@thobias ~/Programas_old]$ ls -la

drwxr-xr-x  2 guest   users      4096 Aug 20 22:00 .
drwxr-xr-x  5 guest   users      4096 Aug 20 22:00 ..
-rw-r--r--  1 guest   users     30174 Aug 17 21:10 Programas_residentes_para_DOS.txt
-rw-r--r--  1 guest   users      2667 Aug 23 03:59 Simulador_de_um_processador_pipeline.txt

[guest@thobias ~/Programs_old]$
[guest@thobias ~/Programs_old]$
[guest@thobias ~/Programs_old]$ cd .._