[SOLVED] shutdown without password

[televisi]

Resolution located at HERE

Hi All,
I've search through google, and even through this ubuntu forum, but seems all suggestions still not giving me any solution

I'm using Ubuntu server version.

I want to be able to shutdown without asking for password, this is what I do:
sudo visudo and add the following:

user ALL=NOPASSWD: /sbin/shutdown

Now, I try to logout and log back in, and type

shutdown -r now

or

/sbin/shutdown -r now

The above command giving an error message: shutdown: need to be root

I think that error message comes up because the shutdown file is owned by root, right? or wrong?

I try:

sudo shutdown -r now

or

sudo /sbin/shutdown -r now

The above command asking me for [sudo] password

Anything that I miss here?

[mgt_90]

You could run "sudo -s" to get a root shell. You'd need to enter a password to get the root shell, but after that, it shouldn't prompt you.

[mrbiggbrain]

why would you like to do this, maybe if we knew what you where doing we could say how

[televisi]

hi mgt_90,
Er.. the purpose is shutdown without asking for password, and by using 'sudo -s' or even 'sudo -i' are not really what I want, if you know what I mean....

[_Purple_]

Try

televisi ALL=(ALL)NOPASSWD:/sbin/shutdown

televisi = user
ALL = any host /ip
(ALL) = can run as any user

[mgt_90]

hi mgt_90,
Er.. the purpose is shutdown without asking for password, and by using 'sudo -s' or even 'sudo -i' are not really what I want, if you know what I mean....

Any particular reason why you don't want it to prompt for a password? If it's something like a cron job, then can't you get root to run that?

[terdon]

Try

username ALL=NOPASSWD:/sbin/shutdown
username ALL=NOPASSWD:/etc/init.d

Then run

sudo shutdown -h now

Seems that shutdown calls processes from init.d so you must have access to that also. See https://answers.launchpad.net/ubuntu/+question/7998

[televisi]

Hi Purple,
I put exactly the same as you suggested then I:
- restart manually the system
- login back as user
- run sudo shutdown -r now
- System still asking me for the SUDO password, strange things?

is it really a big matter to put <SPACE> or <TAB> in combination in between characters?

user<SPACE>ALL<SPACE>=<SPACE>(ALL)<SPACE>NOPASSWD:<SPACE>/sbin/shutdown

or

user<TAB>ALL<SPACE>=<SPACE>(ALL)<SPACE>NOPASSWD:<SPACE>/sbin/shutdown

Try

televisi ALL=(ALL)NOPASSWD:/sbin/shutdown

televisi = user
ALL = any host /ip
(ALL) = can run as any user

[televisi]

hi terdon,
Your suggestion still not working right after I restart the system manually.

This is what I add in /etc/sudoers:

user ALL=(ALL) NOPASSWD:/sbin/shutdown, /etc/init.d

Try

username ALL=NOPASSWD:/sbin/shutdown
username ALL=NOPASSWD:/etc/init.d

Then run

sudo shutdown -h now

Seems that shutdown calls processes from init.d so you must have access to that also. See https://answers.launchpad.net/ubuntu/+question/7998

[aysiu]

Please don't ever run sudo -s. If you want a persistent root prompt, use

sudo -i

That said, I don't think either will really help you in this case.

If you've done as you said, then you've done everything right, assuming user is just a placeholder for your actual username.

In other words, if your username is televisi, then it should be

televisi ALL=NOPASSWD: /sbin/shutdown

and not

user ALL=NOPASSWD: /sbin/shutdown