SSH in shell script with password

Question

I want to write one shell script like

command1    
ssh vivek@remotehost 
    fire command on remote host

Now I have password in pass.txt . But when I change stdin with file. It is not reading password from file.

script.sh < password.txt

It is prompting for the password in place of reading password from the file. What I am doing wrong ?

Second problem is that shell script don't shows the command fired. Is there a way , I can show fired command from it ?

Note : I don't have key based access on remote system. I can only use password based login for ssh.

Do you have remote ssh server deliberately set up to *deny* key-based authorization, or you can't write to $HOME/.ssh directory? That's the only 2 ways I can think of why you can't use keys... — GreyCat, Jun 01 '11 at 07:05
possible duplicate of [Way to automatically enter in shell password?](http://stackoverflow.com/questions/8200461/way-to-automatically-enter-in-shell-password) — Aaron Digulla, Oct 03 '13 at 14:55

score 2 · Accepted Answer · answered May 31 '11 at 18:32

2

You can use ssh-agent or expect (the programing language) to do this.

answered May 31 '11 at 18:32

Joshua Smith

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score 1 · Answer 2 · answered May 31 '11 at 19:18

OpenSSH ssh does not reads the password from stdin but from /dev/tty. That's why you have to use Expect or some other similar tool to automate it.

plink is another client, also available for Linux/Unix that accepts the password as a parameter on the command line... though that has some ugly security implications.

score 1 · Answer 3 · answered Jun 01 '11 at 13:29

1

Okay, just to mention yet another option: sshpass is a tool developed for exactly the task of "fooling" regular openssh client to accept password non-interactively.

answered Jun 01 '11 at 13:29

GreyCat

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SSH in shell script with password

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