UNIX for Advanced & Expert Users

Hi,

We usually switch user using the below command.

Code:

 
sudo su - user1

It then prompts for the password which we feed in.

I wish to pass both the username and the password in one go thus eliminating the prompt for the password.

I am using java standalone to connect to unix using java technology JSCH.

Any workaround will also do.

Can you please help ?

In the sudoers file you have to add the entry as NOPASSWD for for the id .May be ur admin can do it.

Two questions ..

1. If i can ask the Admin to do so then how will i pass the password? can you share the command format as example?

2. If my Admin does not implement the above because it goes against company policy, then what is the solution to this problem ?

---------- Post updated at 05:39 AM ---------- Previous update was at 03:44 AM ----------

Can a script help here ?

I can invoke a unix shell script from my java code.

Is it possible to pass the user id and the password to the script which used switch user? If so, please help me code the script.

su, sudo, and other login systems are designed to prevent being scripted.

The response from millan will remove the password prompt, so there is no need to supply it.

It's the best solution if you trust your users not to leave their screen open.




Robin

What is the sudoers file that Millan stated ?

Is it the same for all users ?

I thought I could save the username and password in a file which could be provided to sudo command. Will that work ?

Are we exhausted with no solution apart from Millan's ?

To repeat: This is a security measure, because stored plaintext passwords are an extremely bad idea.

They insist on talking to a human, and the way to do that is to insist on talking to a terminal. Not pipes, not files, just terminals.

You can fake a terminal with the expect language if you absolutely must, but this is a last resort.

Setting nopasswd in sudoers is a better idea. Even better if you can restrict it to one exact thing.

sudoers is sudo's config file, which you edit with the visudo command.