Cpanel & Fedora root problem urgent

when i install fedora everything was perfect and i was able to connect the system as root,
but after i install the cpanel i was not able to connect as a root any more

bash: /bin/su: permission denied

i had install fedora two times and each time i have faced with the same error
how could i solve this out
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Reboot your machine and boot it in single user mode and change permission as follows

in /  all directories must be 755 except following with the permission mentioned as follows

lost+found = 770
proc = 555
root = 750
tmp =777

I hope this will work!

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CahitEyAuthor Commented:
Also the problem wa wheel users i solved with your advice and wheel users thnks

And to boot in single user mode use following instructions at the Grub screen.

1. If you have a GRUB password configured, type p and enter the password, otherwise skip this step.

2. Select Red Hat Linux with the version of the kernel that you wish to boot and type e for edit. You will be presented with a list of items in the configuration file for the title you just selected.

3. Select the line that starts with kernel and type e to edit the line.

4. Go to the end of the line and type single as a separate word (press the [Spacebar] and then type single). Press [Enter] to exit edit mode.

5. Back at the GRUB screen, type b to boot into single user mode.
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CahitEyAuthor Commented:
Hello I have a question about Ubuntu, is this the same of Linux is a version of Linux?, what it is?
CahitEyAuthor Commented:
Yes it is a lilnux version but a little bit different then fedora
cent os
red hat
is the same family's siblings

but the ubuntu suse is an other family :) sth. like this but the flowing ideas are same :)
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