su root (without asking for password)

matiasquestions · 12-14-2005, 04:44 PM

Hi!

I want to switch to root with the command "su root" but without having to enter the root password every time.

Anyone knows how to do it???

(I've found googling something about sudo -s but that isn't usefull in my case...)

Thanks!

jailbait · 12-14-2005, 06:52 PM

Quote:

Originally Posted by matiasquestions

Hi!

I want to switch to root with the command "su root" but without having to enter the root password every time.

Anyone knows how to do it???

(I've found googling something about sudo -s but that isn't usefull in my case...)

Thanks!

You can't. It is basic design in Linux that you cannot switch users without providing the new user password.

---------------------
Steve Stites

unSpawn · 12-14-2005, 08:06 PM

(I've found googling something about sudo -s but that isn't usefull in my case...)
With sudo you can use the "NOPASSWD" tag to prevent asking for a password. Of course you (should) understand the implications of allowing anyone root account access w/o having to know the pass. At least use something with logging capabilities like rootsh instead of su if you're not the only one who will have root account access this way.

infiniphunk · 12-14-2005, 08:58 PM

Quote:

Originally Posted by jailbait

You can't. It is basic design in Linux that you cannot switch users without providing the new user password.

---------------------
Steve Stites

Unless you're already root, right?

matiasquestions · 12-15-2005, 01:20 AM

I think that there must be any way to do this.... I can remotely access to a my server throught ssh with a ssh public/private key, without password, also I can switch to root by typing "sudo -" (and having the apropiates entries in /etc/sudoers).....

So, I think that something similar must be....let's continue googling.... If I found the way, I'll tell you...

Thanks everybody.

matiasquestions · 12-15-2005, 01:23 AM

Quote:

Originally Posted by unSpawn

(I've found googling something about sudo -s but that isn't usefull in my case...)
With sudo you can use the "NOPASSWD" tag to prevent asking for a password. Of course you (should) understand the implications of allowing anyone root account access w/o having to know the pass. At least use something with logging capabilities like rootsh instead of su if you're not the only one who will have root account access this way.

Hi!

I can do this with sudo, but the problem is that this way, isn't run the .bashrc file of root.... and I've some things I need to be run when a root session is opened.

Thanks for replying.

coolpyrofreak · 12-15-2005, 01:44 AM

log in as root, then type "visudo". add this line to the section that says "# Members of the admin group may gain root privileges":

user ALL=(ALL) NOPASSWD: ALL

where "user" is your real user name. then all commands that you need to run as root can be preceded with "sudo" and it will run with root privileges. you can also do "sudo su" which will give you the root shell without the password.

matiasquestions · 12-15-2005, 02:04 AM

Quote:

Originally Posted by coolpyrofreak

log in as root, then type "visudo". add this line to the section that says "# Members of the admin group may gain root privileges":

user ALL=(ALL) NOPASSWD: ALL

where "user" is your real user name. then all commands that you need to run as root can be preceded with "sudo" and it will run with root privileges. you can also do "sudo su" which will give you the root shell without the password.

Great!!!

I had already that line, but I didn't realised of doing "sudo su" instead of "sudo -s".

Just what I was looking for. Thanks a lot.

KimVette · 12-15-2005, 02:37 PM

Quote:

Originally Posted by infiniphunk

Unless you're already root, right?

heheheh I was going to post the same thing.