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Top Forums Shell Programming and Scripting Passwordless SFTP - SCP Option? Post 302675791 by Scott on Monday 23rd of July 2012 03:03:54 PM
Old 07-23-2012
The code looks OK, but without knowing the values of the variables, how can we know for sure? (I would just say that you're scp'ing a file to a remote server, then chmod'ing it locally).

I'd be surprised if you Googled "password-less authentication using SSH" and didn't get a good answer.
 

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PAM_SSH(8)						    BSD System Manager's Manual 						PAM_SSH(8)

NAME
pam_ssh -- authentication and session management with SSH private keys SYNOPSIS
[service-name] module-type control-flag pam_ssh [options] DESCRIPTION
The SSH authentication service module for PAM, pam_ssh provides functionality for two PAM categories: authentication and session management. In terms of the module-type parameter, they are the ``auth'' and ``session'' features. It also provides null functions for the remaining categories. SSH Authentication Module The SSH authentication component provides a function to verify the identity of a user (pam_sm_authenticate()), by prompting the user for a passphrase and verifying that it can decrypt the target user's SSH key using that passphrase. The following options may be passed to the authentication module: debug syslog(3) debugging information at LOG_DEBUG level. use_first_pass If the authentication module is not the first in the stack, and a previous module obtained the user's password, that password is used to authenticate the user. If this fails, the authentication module returns failure without prompting the user for a password. This option has no effect if the authentication module is the first in the stack, or if no previous modules obtained the user's password. try_first_pass This option is similar to the use_first_pass option, except that if the previously obtained password fails, the user is prompted for another password. keyfiles Specify the comma-separated list of files in $HOME/.ssh to check for SSH keys. The default is ``id_dsa,id_rsa,identity''. nullok Allow empty passphrases. SSH Session Management Module The SSH session management component provides functions to initiate (pam_sm_open_session()) and terminate (pam_sm_close_session()) sessions. The pam_sm_open_session() function starts an SSH agent, passing it any private keys it decrypted during the authentication phase, and sets the environment variables the agent specifies. The pam_sm_close_session() function kills the previously started SSH agent by sending it a SIGTERM. The following options may be passed to the session management module: debug syslog(3) debugging information at LOG_DEBUG level. FILES
$HOME/.ssh/identity SSH1/OpenSSH RSA key $HOME/.ssh/id_dsa OpenSSH DSA key $HOME/.ssh2/id_rsa_* SSH2 RSA keys $HOME/.ssh2/id_dsa_* SSH2 DSA keys SEE ALSO
ssh-agent(1), syslog(3), pam.conf(5), pam(8) AUTHORS
Andrew J. Korty <ajk@iu.edu> wrote pam_ssh. Dag-Erling Smorgrav wrote the original OpenPAM support code. Mark R V Murray wrote the original version of this manual page. BSD
November 26, 2001 BSD
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