How to create a user with root privileges in bash?

Posted by George Edison on Ask Ubuntu See other posts from Ask Ubuntu or by George Edison
Published on 2011-03-30T22:31:13Z Indexed on 2012/11/06 17:22 UTC
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Filed under:

root

|

users

|

privileges

I have run the following commands:

sudo groupadd -r testgroup
sudo useradd -g testgroup -M -r testuser

Notice the -r option, which according to the man page:

-r
Create a system account.

Assuming I have a user account with root privileges, I then run:

sudo -u testuser cat /dev/input/mouse0

However, I get:

cat: /dev/input/mouse0: Permission denied

Running the same command as root provides the expected output (garbled output from the mouse driver).

How can I create a user with root privileges?

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