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Top Forums Shell Programming and Scripting Login, excute command, logout Script Help Post 302755079 by jim mcnamara on Friday 11th of January 2013 06:32:38 PM
Old 01-11-2013
You cannot easily 'enter a password' with ssh, it is built to bypass most attempts at that.
The passwd command is also that way. You will need to bypass those problems which involves some advanced techniques.

What you will have to do is one of these:

1. If you are root or an admin, ssh to the remote box and do password changes one by one manually

2. install the "expect" application and create an expect script to answer all the prompts. You outlawed that already.

3. write a pty emulator in C that can become the sessions leader/terminal owner.
see:
Solaris Systems Programming
download: source code The code you want is called pty.c It is meant for Solaris, but with minor changes it will work on linux.
It is basically like expect in that it allows batch interaction with passwords embedded.

Which BTW is a terrible idea.

Since you have a few routers, this post sat unaswered for a while, maybe you could have completed the task manually. If you want a longterm solution consider #2 or #3.
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SSH-COPY-ID(1)						      General Commands Manual						    SSH-COPY-ID(1)

NAME
ssh-copy-id - install your public key in a remote machine's authorized_keys SYNOPSIS
ssh-copy-id [-i [identity_file]] [user@]machine DESCRIPTION
ssh-copy-id is a script that uses ssh to log into a remote machine (presumably using a login password, so password authentication should be enabled, unless you've done some clever use of multiple identities) It also changes the permissions of the remote user's home, ~/.ssh, and ~/.ssh/authorized_keys to remove group writability (which would oth- erwise prevent you from logging in, if the remote sshd has StrictModes set in its configuration). If the -i option is given then the identity file (defaults to ~/.ssh/id_rsa.pub) is used, regardless of whether there are any keys in your ssh-agent. Otherwise, if this: ssh-add -L provides any output, it uses that in preference to the identity file. If the -i option is used, or the ssh-add produced no output, then it uses the contents of the identity file. Once it has one or more fin- gerprints (by whatever means) it uses ssh to append them to ~/.ssh/authorized_keys on the remote machine (creating the file, and directory, if necessary) SEE ALSO
ssh(1), ssh-agent(1), sshd(8) OpenSSH 14 November 1999 SSH-COPY-ID(1)
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