Rob's web

Owners

Every file or directory has a owner. These are set with the creation of the file or directory.

[root@server1 /]# ll
totaal 28
lrwxrwxrwx.   1 root root    7  4 nov  2020 bin -> usr/bin
dr-xr-xr-x.   5 root root 4096  5 mei 14:38 boot
drwxr-xr-x.  19 root root 3360  1 jun 00:09 dev
drwxr-xr-x. 105 root root 8192 13 jun 13:50 etc

The first name (root) is the users name. The second is the groups name.

Changing owner/group

To change ownership you must be the owner or root.

# chown user:group (-R) ......

The owner can also be a deamon like postfix or apache.

drwxr-xr-x. 2 root    root          204  4 nov  2020 anaconda
-rw-------. 1 root    root            0  1 jun 03:26 boot.log
-rw-------. 1 root    utmp            0  1 jun 03:26 btmp
drwxr-xr-x. 2 chrony  chrony          6  8 aug  2019 chrony
-rw-------. 1 root    root      9319409 17 jun 13:09 messages
-rw-r--r--. 1 named   named   100855301 17 jun 12:29 named.log
drwxrwx---. 2 apache  root          127  7 jun 09:34 php-fpm
drwxr-x---. 2 prosody prosody       165  2 jun 21:37 prosody
drwxr-x---. 2 redis   redis          49  3 jun 03:45 redis
drwxr-xr-x. 2 root    root            6  4 nov  2020 rhsm

chown always clears the setuid and setgid bits.

For help type:

# chown --help