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AIX -/usr/bin/expect shows output Don't know why.

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Old 12-29-2013
AIX -/usr/bin/expect shows output Don't know why.
Hi,

I have been programming with the expect program for a while now and have create a series of menu driven checks for the operations team. One thing I have noticed is that I call a remote script and pass parameters and this is display on the screen....for example.
Within the script

#!/usr/bin/expect
set timeout 2
#password passed into script
set pw1 [lrange $argv 0 0 ]
set pw2 ]lrange $argv 1 1 ]
#set off messages
log_user 0
#swap to user
spawn su - user
expect "Password:"
send "$pw1\r"
expect "$"
---- no messages up to this point
send "/usr/local/nik/bin/program $pw2\r"

I get ....

</program password
returned on the screen
I can't understand why when log_user 0 is enabled

Any one any ideas? Of course I don't want every one seeing a password ....

Thanks Nik.
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LEARN ABOUT OPENSOLARIS

shells

shells(4)							   File Formats 							 shells(4)

NAME

       shells - shell database

SYNOPSIS

       /etc/shells

DESCRIPTION

       The shells file contains a list of the shells on the system. Applications use this file to determine whether a shell is valid. See getuser-
       shell(3C). For each shell a single line should be present, consisting of the shell's path, relative to root.

       A hash mark (#) indicates the beginning of a comment; subsequent characters up to the end of the line are not interpreted by  the  routines
       which search the file. Blank lines are also ignored.

       The following default shells are used by utilities: /bin/bash, /bin/csh, /bin/jsh, /bin/ksh, /bin/ksh93, /bin/pfcsh, /bin/pfksh, /bin/pfsh,
       /bin/sh, /bin/tcsh, /bin/zsh, /sbin/jsh, /sbin/sh, /usr/bin/bash, /usr/bin/csh, /usr/bin/jsh, /usr/bin/ksh, /usr/bin/ksh93, /usr/bin/pfcsh,
       /usr/bin/pfksh, /usr/bin/pfsh, and /usr/bin/sh, /usr/bin/tcsh, /usr/bin/zsh, and /usr/sfw/bin/zsh. /etc/shells overrides the default list.

       Invalid shells in /etc/shells could cause unexpected behavior, such as being unable to log in by way of ftp(1).

FILES

       /etc/shells    list of shells on system

SEE ALSO

       vipw(1B), ftpd(1M), sendmail(1M), getusershell(3C), aliases(4)

SunOS 5.11							    20 Nov 2007 							 shells(4)