Alternatives for sudo??

 
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Operating Systems Linux Red Hat Alternatives for sudo??
# 1  
Old 08-02-2010
Alternatives for sudo??

I am looking for an alternative for sudo in linux, where i need not type the password.
OR is there any other version of 'growisofs', which can be executed under sudo??? As currently 'growisofs' refuses to start under sudo...

Thanks in advance
# 2  
Old 08-02-2010
Check the man page for sudoers for the NOPASSWD modifier, which allows you to run certain commands without a password. Example:
Code:
youruser ALL = (root) NOPASSWD: /usr/bin/growisofs

# 3  
Old 08-02-2010
You can try to use ssh with a public key like:

Code:
ssh root@localhost growisofs

To do this, you must create a public/private key pair for the user who should be allowed to ssh into the root account and then put the public key into root's authorized_keys file. You may restrict this key to execute only growisofs by writing

Code:
command="growisofs" ...

in front of the public key in root's authorized_keys file. You also have to allow root login in the sshd_config file

Code:
PermitRootLogin yes

# 4  
Old 08-03-2010
ssh root@localhost growisofs
Above command asked for the password and password is not set on my machine. Without entering password, i presses enter but "Permission denied" message is shown. So how can i handle this?

Looking forward for reply,

Thanks in advance
# 5  
Old 08-03-2010
Does it ask for the root password or is your RSA key protected by a passphrase.

If the following command asks for a password, then your private key is protected with a passphrase.

Code:
ssh-keygen -y -f /path/to/your/private-key

In this case you need to create another key without passphrase and use this to login into the root account or remove the passphrase from the existing key.

If this is not the problem, then please check, that your public key in root's authorized_keys file is entered in a single line. This is a common problem with copy-and-pasting a key resulting in two or more lines in the authorized_keys file.
# 6  
Old 08-03-2010
Just a question: why use SSH and public key authentication to create a password-less connection to the local host in order to run a program as root, losing all environment variables and other settings, if sudo lets you retain all that in a much simpler way? Or is there a certain reason you didn't pick up on my explanation above?
# 7  
Old 08-03-2010
ssh root@localhost growisofs
Do i need to first generate private key before giving above command? If yes, then how can we generate private key? If not then how can we determine the path to private-key?

how can we create another key without passphrase? and where root's authorized_keys file and sshd_config file is located?

looking forward for reply,

Thanks in advance

---------- Post updated at 07:39 AM ---------- Previous update was at 07:36 AM ----------

pludi,

I followed the steps u told, but it is not working....
can u tell me alternate way or any additional thing to do?

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