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Full Discussion: Automated SCP script passing password to preserve source file timestamp
Top Forums UNIX for Advanced & Expert Users Automated SCP script passing password to preserve source file timestamp Post 302439979 by Corona688 on Sunday 25th of July 2010 11:33:04 AM
Old 07-25-2010
Ugh...

That you're having to shoehorn a stored plaintext password into scp's otherwise secure authentication system with expect is a subtle hint, writ in mile-high flashing neon letters: You're not supposed to do this. It's designed to stop you doing this for security reasons, use pre-shared keys instead -- it's what they're there for. There's instructions for it plastered all over the internet. They do exactly what you want except they don't have the security problems of storing a plaintext password, and don't have the poor reliability and extra wait and extra software requirements of an interactive input manually brute-forced with expect.

Testing it here, copying from a remote host with scp -p does indeed preserve the timestamp, and without a password given pre-shared keys, and definitely non-interactively, deprived of any sort of terminal. I'd expect it to be an expect weirdness, or perhaps an odd version of ssh.
 

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LEARN ABOUT DEBIAN

pscp

pscp(1) 							 PuTTY tool suite							   pscp(1)

NAME

       pscp - command-line SCP (secure copy) / SFTP client

SYNOPSIS

       pscp [options] [user@]host:source target
       pscp [options] source [source...] [user@]host:target
       pscp [options] -ls [user@]host:filespec

DESCRIPTION

       pscp is a command-line client for the SSH-based SCP (secure copy) and SFTP (secure file transfer protocol) protocols.

OPTIONS

       The command-line options supported by pscp are:

       -V     Show version information and exit.

       -pgpfp Display the fingerprints of the PuTTY PGP Master Keys and exit, to aid in verifying new files released by the PuTTY team.

       -ls    Remote directory listing.

       -p     Preserve file attributes.

       -q     Quiet, don't show statistics.

       -r     Copy directories recursively.

       -unsafe
	      Allow server-side wildcards (DANGEROUS).

       -v     Show verbose messages.

       -load session
	      Load settings from saved session.

       -P port
	      Connect to port port.

       -l user
	      Set remote username to user.

       -batch Disable interactive prompts.

       -pw password
	      Set  remote  password to password. CAUTION: this will likely make the password visible to other users of the local machine (via com-
	      mands such as `w').

       -1     Force use of SSH protocol version 1.

       -2     Force use of SSH protocol version 2.

       -C     Enable SSH compression.

       -i path
	      Private key file for authentication.

       -scp   Force use of SCP protocol.

       -sftp  Force use of SFTP protocol.

MORE INFORMATION

       For more information on pscp it's probably best to go and look at the manual on the PuTTY web page:

       http://www.chiark.greenend.org.uk/~sgtatham/putty/

BUGS

       This man page isn't terribly complete. See the above web link for better documentation.

PuTTY tool suite						    2004-03-24								   pscp(1)
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