User groups

M

Miax

I have made a user account, but I don't know which default group gives which permissions except wheel. Is there a document about this?
 
Hi,

On my servers my admin account is in wheel group, and on my laptop my account is in news, games.

All depend of what do you want to do.
 
Also to see on witch group you are:
Code: 
group user
(Where user is the name you set)
or
Code: 
id -Gn user
(Where user is the name you set)

To add user to a group:

just modify /etc/group
 
sk8harddiefast said:
Also to see on witch group you are:
Code: 
group user
(Where user is the name you set)
or
Code: 
id -Gn user
(Where user is the name you set)

To add user to a group:

just modify /etc/group
Click to expand...

or use pw(8)
 
Miax said:
I have made a user account, but I don't know which default group gives which permissions except wheel. Is there a document about this?
Click to expand...

Groups themselves don't give any permissions, it only puts users into a particular category. Permissions are set on files which you can see using:
$ ls -l

Code: 
$ ls -l su*
-r-sr-xr-x  1 root  wheel  14500 Jul 18 22:24 su*
-r-xr-xr-x  2 root  wheel   8860 Jul 18 22:24 sum*
$

From the above code, it shows that you can run su or sum if you are root or in the wheel group.

You can see a list of all groups on the system with:
$ cat /etc/group

Related stuff from the handbook:
Groups
Permissions
User Management
 
noz said:
Code: 
$ ls -l su*
-r-sr-xr-x  1 root  wheel  14500 Jul 18 22:24 su*
-r-xr-xr-x  2 root  wheel   8860 Jul 18 22:24 sum*
$

From the above code, it shows that you can run su or sum if you are root or in the wheel group.
Click to expand...
Errmm. No, it also shows that the 'other' group has read and execute access. The 'other' group means everyone. Hence, everyone can read or execute those files.
 
Thank you. But I have one more question. I have copied a directory from usb stick and cause of permission, i used the root account. Now the directory is owned by root. But it has nothing more than pdf files. So, can I change the owner of the directory with a non-root user account?
 
Code: 
chown -R [B]user file[/B]
Where user is that you set as user and file is the file you want to change permissions. Example:
Code: 
chown -R emberdaemon skate/
 
Old question, but if you are using zsh you may add to .zshrc the following functions:
Code: 
usergroups() { for user in $(awk -F: '/^[[:space:]]*#/ {NR--; next} {print $1}' /etc/passwd); do echo "$user: $(groups $user)"; done; }
groupusers() { cat /etc/group | awk -F: '/^[[:space:]]*#/ {NR--; next} {print $1, $3, $4}' | while read group gid members; do
        members=$members,$(awk -F: "/^[[:space:]]*#/ {NR--; next} \$4 == $gid {print \",\" \$1}" /etc/passwd);
        echo "$group: $members" | sed 's/,,*/ /g';
    done; }
Then from the command line:
Code: 
➜ ~ # usergroups
root: wheel operator
toor: wheel
daemon: daemon
operator: operator
bin: bin
tty: nogroup
kmem: nogroup
games: games
news: news
man: man
sshd: sshd
smmsp: smmsp
mailnull: mailnull
bind: bind
unbound: unbound
proxy: proxy
_pflogd: _pflogd
_dhcp: _dhcp
uucp: uucp
pop: mail
auditdistd: audit
www: www
_ypldap: _ypldap
hast: hast
nobody: nobody
git_daemon: git_daemon

➜ ~ # groupusers
wheel: root root toor
daemon:  daemon
kmem:
sys:
tty:
operator: root operator
mail:  pop
bin:  bin
news:  news
man:  man
games:  games
ftp:
staff:
sshd:  sshd
smmsp:  smmsp
mailnull:  mailnull
guest:
video:
bind:  bind
unbound:  unbound
proxy:  proxy
authpf:
_pflogd:  _pflogd
_dhcp:  _dhcp
uucp:  uucp
dialer:
network:
audit:  auditdistd
www:  www
_ypldap:  _ypldap
hast:  hast
nogroup:  tty kmem
nobody:  nobody
git_daemon:  git_daemon
 
You must log in or register to reply here.
Back
Top