Can you give the output of the command:
$ ls -l /
This is the output:
gpg-agent[5457]: can't create directory `/tmp/gpg-z5o8D6': Permiso denegado
[hugo@localhost ~]$ ls -l /
total 192
-rw-r--r-- 1 root root 592 dic 18 02:33
drwxr-xr-x 2 root root 4096 mar 25 19:34 bin/
drwxr-xr-x 3 root root 4096 mar 27 17:54 boot/
-rw------- 1 root root 16237 ene 13 04:02 dead.letter
drwxr-xr-x 18 root root 4840 mar 27 17:54 dev/
drwxr-xr-x 130 root root 12288 mar 27 17:54 etc/
drwxr-xr-x 3 root root 4096 dic 17 10:29 home/
drwxr-xr-x 2 root root 4096 dic 17 10:31 initrd/
drwxr-xr-x 16 root root 12288 mar 23 20:42 lib/
drwx------ 2 root root 16384 dic 17 05:29 lost+found/
drwxrwxr-x 2 root root 4096 mar 27 17:54 media/
drwxr-xr-x 2 root root 4096 dic 17 05:29 mnt/
-rw-rw-r-- 1 root root 67331 dic 22 19:06 Module.symvers
-rw-rw-r-- 1 root root 0 dic 17 05:45 null
drwxr-xr-x 7 root root 4096 mar 24 12:00 opt/
dr-xr-xr-x 134 root root 0 mar 27 13:23 proc/
drwxr-x--- 21 root root 4096 mar 27 17:46 root/
drwxr-xr-x 2 root root 12288 mar 25 19:35 sbin/
drwxr-xr-x 12 root root 0 mar 27 13:23 sys/
drwxr-xr-x 34 root root 12288 mar 27 17:54 tmp/
drwxr-xr-x 14 root root 4096 dic 6 11:36 usr/
drwxr-xr-x 21 root root 4096 mar 24 10:11 var/
[hugo@localhost ~]$