Realicé instalación en virtualbox y sin problemas, el problema se presentó al instalar ne máquina física. Respecto a los comandos, estos son los resultados:
[root@localhost ~]# ls -lha /var/www/html
total 112K
drwxrwxrwx. 17 asterisk asterisk 4,0K jun 25 09:28 .
drwxr-xr-x. 8 root root 4,0K jun 25 09:28 ..
drwxrwxrwx. 9 asterisk asterisk 4,0K jun 25 09:27 admin
lrwxrwxrwx. 1 asterisk asterisk 27 jun 25 09:27 assets -> /var/www/html/admin /assets/
drwxrwxrwx. 2 asterisk asterisk 4,0K jun 25 09:27 _asterisk
drwxrwxrwx. 2 asterisk asterisk 4,0K jun 25 09:26 cache
-rwxrwxrwx. 1 asterisk asterisk 757 jun 19 09:17 config.php
drwxrwxrwx. 2 asterisk asterisk 4,0K jun 25 09:26 configs
-rwxrwxrwx. 1 asterisk asterisk 8,1K jun 16 14:41 favicon.ico
drwxrwxrwx. 3 asterisk asterisk 4,0K jun 25 09:26 help
drwxrwxrwx. 3 asterisk asterisk 4,0K jun 25 09:27 images
-rwxrwxrwx. 1 asterisk asterisk 12K jun 16 14:41 index.php
-rwxrwxrwx. 1 asterisk asterisk 1,4K jun 16 14:41 issabel_warning_authenticatio n.php
drwxrwxrwx. 2 asterisk asterisk 4,0K jun 25 09:26 lang
drwxrwxrwx. 4 asterisk asterisk 4,0K jun 25 09:28 libs
drwxrwxrwx. 11 asterisk asterisk 4,0K jun 25 09:28 mail
drwxrwxrwx. 79 asterisk asterisk 4,0K jun 25 09:28 modules
drwxrwxrwx. 2 asterisk asterisk 4,0K jun 25 09:26 panels
drwxrwxrwx. 7 asterisk asterisk 4,0K jun 25 09:27 recordings
-rwxrwxrwx. 1 asterisk asterisk 5,8K jun 16 14:41 rest.php
-rwxrwxrwx. 1 asterisk asterisk 28 jun 16 14:41 robots.txt
drwxrwxrwx. 2 asterisk asterisk 4,0K jun 25 09:26 templates_c
drwxrwxrwx. 3 asterisk asterisk 4,0K jun 25 09:26 themes
drwxrwxrwx. 2 asterisk asterisk 4,0K jun 25 09:26 var
[root@localhost ~]# ls -lha /var/www/html/themes
total 12K
drwxrwxrwx. 3 asterisk asterisk 4,0K jun 25 09:26 .
drwxrwxrwx. 17 asterisk asterisk 4,0K jun 25 09:28 ..
drwxrwxrwx. 7 asterisk asterisk 4,0K jun 25 09:26 tenant