How to use SFTP from command line without entering user and password

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unix2_chkpwd

UNIX2_CHKPWD(8) 						 Linux-PAM Manual						   UNIX2_CHKPWD(8)

NAME

       unix2_chkpwd - helper binary that verifies the password of the current user

SYNOPSIS

       /sbin/unix2_chkpwd servicename username

DESCRIPTION

       unix2_chkpwd  is  a  helper program for applications that verifies the password of the current user.  It is not intended to be run directly
       from the command line and logs a security violation if done so.

       It is typically installed setuid root or setgid shadow and called by applications, which only wishes to do an user authentication and noth-
       ing more.

OPTIONS

       unix2_pwdchk requires the following arguments:

       pam_service
	      The name of the service using unix2_chkpwd. This is required to be one of the services in /etc/pam.d

       username
	      The name of the user whose password you want to verify.

INPUTS

       unix2_pwdchk expects the password via stdin.

RETURN CODES

       unix2_chkpwd has the following return codes:

       1      unix2_chkpwd was inappropriately called from the command line or the password is incorrect.

       0      The password is correct.

HISTORY

       Written by Olaf Kirch loosely based on unix_chkpwd by Andrew Morgan

SEE ALSO

       pam(8)

AUTHOR

       Emily Ratliff.

Linux-PAM 0.76							    2003-03-21							   UNIX2_CHKPWD(8)

UNIX for Advanced & Expert Users