schimba drepturile de acces ale unui fisier/director
a - all u - user g - group o - other + - adaugare drepturi - - diminuare drepturi r - drept citire w - drept scriere x - drept executie
razvan@ragnarok:~/packages$ ls -l zebra-0.95.tar.gz -rw-r--r-- 1 razvan razvan 1379369 Jul 6 23:19 zebra-0.95.tar.gz razvan@ragnarok:~/packages$ chmod go+w zebra-0.95.tar.gz razvan@ragnarok:~/packages$ ls -l zebra-0.95.tar.gz -rw-rw-rw- 1 razvan razvan 1379369 Jul 6 23:19 zebra-0.95.tar.gz razvan@ragnarok:~/packages$ chmod 711 zebra-0.95.tar.gz razvan@ragnarok:~/packages$ ls -l zebra-0.95.tar.gz -rwx--x--x 1 razvan razvan 1379369 Jul 6 23:19 zebra-0.95.tar.gz razvan@ragnarok:~/packages$ chmod 644 zebra-0.95.tar.gz razvan@ragnarok:~/packages$ ls -l zebra-0.95.tar.gz -rw-r--r-- 1 razvan razvan 1379369 Jul 6 23:19 zebra-0.95.tar.gz razvan@ragnarok:~/packages$