UNIX for Advanced & Expert Users

How is it then, the tools like winscp and others are able to feed in both username and password in one go ?

Also, I remember a project in which we used Autosys Server and Client. We have uploaded several scripts to the unix server and the autosys client would execute each script with different unix userids. So, I know it is possible. Not sure how !!

That's exactly what I am looking for !!

Windows utilities generally are not required to worry about UNIX security management for obvious reasons.

There are UNIX equivalents like sshpass but if you use them, beware -- it's possible that anyone on the system could see the password when you do so. They are not installed by default anyway, since they would be severe security holes. To repeat, these login systems are rigid about passwords for better reasons than ticking you off.

The proper way to do these things is still passwordless operation via sudo or ssh keys. Please at least consider them.

Building your own daemon and utilities mean you get to decide how things work. Using already-existing daemons means you're restricted to how things already work.

I have set passwordless login between two ids on the same unix box.

I see this strange behavior.

For the first time even after exchanging keys it prompted for the password when i tried sudo.

After that i exit and tried to sudo several times and it never asked for the password.

Thinking all is fixed and good, I shutdown my system and tried to sudo after 2 hrs and I see it prompted for the password again.

Why is it prompting for the password upon sudo at random instances especially after a long break?

It remembers passwords for a few minutes after they're entered for convenience, in case you wanted to run a lot of commands in a short time.

It is plainly not working passwordlessly if it prompts you even once.

What exactly did you put in sudoers?

Not the sudoers, but the key exchange.

I generated key pair using keygen command for user id user1 and copied the public key to the .ssh/authorized_keys file of user2 on the same box.

Code:

ssh-keygen -b 2048 -t rsa

Shouldn't this work ??

I shall open a new thread for this has gone off subject. Thank you !!