LinuxCNC Support Forum :: Topic: root password (1/1)

lendrum OFFLINE Fresh Boarder Posts: 15 Karma: 0	Could someone tell me what root password is created by the live CD install?
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Re:root password 26 Jun 2012 02:27 #21338

ArcEye
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Hi,

The answer is none.
Ubuntu are a complete PITA when it comes to root logins etc. They want to deny use of root for everything.

Fortunately there are ways around it.

Easiest way, from a terminal:-

$ sudo passwd root
When prompted for a password, give your user password
When prompted for the root password, give something suitable
Now enter
$ sudo passwd -u root
You will get a reply like 'password expiry info updated' or similar
Now enter
$ su root
Enter the root password when prompted
You should now have a root prompt '#' and you are ready to go.

If you use gdm, you will probably have to edit gdm.conf to allow a root login.

You may also want to go into user manager and make sure that root is a member of all groups etc.
Seem to recall not everything was ticked.

regards

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Re:root password 26 Jun 2012 03:45 #21346

BigJohnT OFFLINE Administrator Posts: 4955 Thank you received: 87 Karma: 134	I can't help but wonder why you need a root password... I've never needed to use it with Ubuntu. Do you know about sudo? John
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Re:root password 26 Jun 2012 06:32 #21363

lendrum OFFLINE Fresh Boarder Posts: 15 Karma: 0	Thanks to ArcEye for the route to the root. I will try that. I need root to change rtapi.conf to shut down the smi interupt that delays the real time system. Is there a better way to do that?
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Re:root password 26 Jun 2012 09:14 #21367

BigJohnT OFFLINE Administrator Posts: 4955 Thank you received: 87 Karma: 134	"sudo gedit" in a terminal will open up an editor with root power! John
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Re:root password 27 Jun 2012 08:56 #21393

andypugh
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lendrum wrote:

Thanks to ArcEye for the route to the root. I will try that.
I need root to change rtapi.conf to shut down the smi interupt that delays the real time system. Is there a better way to do that?

gksudo gedit will open gedit with the power to edit everything.

Note that on a 2.5 LiveCD there is an /etc/emc2/rtapi.conf file, but editing that won't help.
You need to edit /etc/linuxcnc/rtapi.conf.

(Which reminds me, I ought to fix the Wiki)

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Re:root password 29 Jun 2012 11:53 #21461

lendrum OFFLINE Fresh Boarder Posts: 15 Karma: 0	I am using 2.4.3 so this problem did not happen. I tested sudo gedit and it works so the root password is not needed. The lathe is running great now. Thanks for all your help.
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Re:root password 29 Jun 2012 13:06 #21463

BigJohnT OFFLINE Administrator Posts: 4955 Thank you received: 87 Karma: 134	I love it when a plan comes together... John
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