05-19-2011
In order to change a password or run sftp with an 'interactive' password requires that the process breaks off from the parent and becomes a session leader. The session has no attached tty.
This is what a daemon process and expect do.
passwd and sftp and ssh are designed to prevent security breaches. Putting a password in plaintext in a script is a security breach
Go here:
http://www.rite-group.com/rich/ssp/index.html
download the source code, find the pty.c program under the pseudo_term directory -- this is what expcect does so that people can get around the inbuilt security of passwd for example.
Last edited by jim mcnamara; 05-19-2011 at 08:59 AM..
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LEARN ABOUT X11R4
sftp-server
sftp-server(1M) System Administration Commands sftp-server(1M)
NAME
sftp-server - SFTP server subsystem
SYNOPSIS
/usr/lib/ssh/sftp-server
DESCRIPTION
sftp-server implements the server side of the SSH File Transfer Protocol as defined in the IETF draft-ietf-secsh-filexfer.
sftp-server is a subsystem for sshd(1M) and must not be run directly. There are no options or config settings.
To enable the sftp-server subsystem for sshd add the following to /etc/ssh/sshd_config:
Subsystem sftp /usr/lib/ssh/sftp-server
See sshd_config(4) for a description of the format and contents of that file.
There is no relationship between the protocol used by sftp-server and the FTP protocol (RFC 959) provided by in.ftpd.
EXIT STATUS
The following exit values are returned:
0 Successful completion.
>0 An error occurred.
FILES
/usr/lib/sftp-server
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWsshdu |
+-----------------------------+-----------------------------+
|Interface Stability |Evolving |
+-----------------------------+-----------------------------+
SEE ALSO
sftp(1), ssh(1), ssh-add(1), ssh-keygen(1), sshd(1M), sshd_config(4), attributes(5)
To view license terms, attribution, and copyright for OpenSSH, the default path is /var/sadm/pkg/SUNWsshdr/install/copyright. If the
Solaris operating environment has been installed anywhere other than the default, modify the given path to access the file at the installed
location.
AUTHOR
Markus Friedl
SunOS 5.10 30 Jul 2003 sftp-server(1M)