how to i change file owner back to root ?
 

couple days ago, i have accentally changed /etc, /bin folders -R to user glacier1985
now i find out htat i can not use su command any more it gives su: cannot set groups: Operation not permitted

so i just wanna know how do i change everything back to file owner root again thank you all in advance

chown -R root directory_name

If you changed the group ownership also make that
chown -R root:root directory_name

hmm... i tried it and it gives me this error message:
chown: changing ownership of `/bin/su': Operation not permitted

but when do su it gives su: cannot set groups: Operation not permitted
so i am kinda stuck.
any ideas ?

1) Just to make sure, you are root when doing this?

2) What is the output of
ls -l /bin/su

1). how can i be root without doing su ?, i can only enter the root password when xwindow prompts
2) the output of ls -l /bin/su is

-rwxrwxrwx 1 glacier1985 root 104622 May 4 12:25 /bin/su

Hit
ctr+alt+f2
and login as root

hmm... no luck, gives the same error message.

holy sh*t after i did chown -R root /bin /etc i got these errors and i am sure that the password i enter is correct


[glacier1985@localhost glacier1985]$ su
Password:
su: incorrect password
[glacier1985@localhost glacier1985]$

maybe you forgot your password ?
just log in as root and chown -R root /bin && chown -R root /etc

if you really forgot your root password ( i dont know why someone would forgot their password )
this might help : http://www.desktop-linux.net/root-password.htmRoot Password Recovery Guide

On my su it has the suid bit set. Try
chmod u+s /bin/su

good, it's working now thank you so much