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I am logged in with imp user. And when I am trying to login via root user on terminal:

impuser@machine:~$ su - root

it gives:

setgid:Operation not permitted

any idea,How to resolve this issue?

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You're using ubuntu, so you want sudo, not su. – Wug Aug 20 '12 at 13:00

migrated from stackoverflow.com Aug 20 '12 at 13:12

3 Answers

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Ubuntu only allows sudo to increase privilege level, not su (unlike other distros). To get a root shell, try this:

sudo su
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The canonical way is to use sudo bash or whatever shell is your favorite – Wug Aug 20 '12 at 20:55
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This depends on the configuration, but try:

sudo su - root
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If "impuser" is allowed to get root ( that means that he is not excluded from sudo rights in the /etc/sudoers file ) Just press Ctrl+Alt+T on your keyboard to open Terminal. When it opens, run the command below.

sudo su
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