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Top Forums Shell Programming and Scripting Expect Redirecting o/p to an Variable Post 302978090 by sudharson on Tuesday 26th of July 2016 07:24:27 AM
Old 07-26-2016
Thanks for the reply. Sorry i should have been more specific.

This is an expect script which internally calls another expect script to reset password on multiple servers by passing userid , oldpass , server name and newpassword.

Code:
#
!/dvlp/bin/expect
package require cgi

................................
......................
......................

                exec /dbase/mesa/bin/passwd_reset  $login "$oldpass"  server1 "$newpassword" > /tmp/passwd_reset_out$login 2>&1
                sleep 1
                exec  /dbase/mesa/bin/passwd_reset  $login "$oldpass" server2  "$newpassword" >> /tmp/passwd_reset_out$login 2>&1
                sleep 1
                exec  /dbase/mesa/bin/passwd_reset  $login "$oldpass" server3  "$newpassword" >> /tmp/passwd_reset_out$login 2>&1
                set out "grep -i 'password changed' /tmp/passwd_reset_out$login | wc -l"
               send_user "$out"


Below is the passwd_reset which gets called from the previous script


Code:
#!/usr/bin/expect -f

set username [lindex $argv 0]
set password [lindex $argv 1]
set serverid [lindex $argv 2]
set newpassword [lindex $argv 3]

spawn ssh -q -o StrictHostKeyChecking=no $username@$serverid
expect "assword:"
send "$password\r"
expect  ">"
send "passwd\r"
expect "Old Password:"
send "$password\r"
expect "New password:"
send "$newpassword\r"
expect "Retype new password:"
send "$newpassword\r"
expect "password changed."
send "exit"


Moderator's Comments:
Mod Comment Please use code (NOT icode!) tags as required by forum rules!

Last edited by RudiC; 07-26-2016 at 08:41 AM.. Reason: Changed ICODE tags
 

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MKPASSWD(1)						      General Commands Manual						       MKPASSWD(1)

NAME
mkpasswd - generate new password, optionally apply it to a user SYNOPSIS
mkpasswd [ args ] [ user ] INTRODUCTION
mkpasswd generates passwords and can apply them automatically to users. mkpasswd is based on the code from Chapter 23 of the O'Reilly book "Exploring Expect". USAGE
With no arguments, mkpasswd returns a new password. mkpasswd With a user name, mkpasswd assigns a new password to the user. mkpasswd don The passwords are randomly generated according to the flags below. FLAGS
The -l flag defines the length of the password. The default is 9. The following example creates a 20 character password. mkpasswd -l 20 The -d flag defines the minimum number of digits that must be in the password. The default is 2. The following example creates a password with at least 3 digits. mkpasswd -d 3 The -c flag defines the minimum number of lowercase alphabetic characters that must be in the password. The default is 2. The -C flag defines the minimum number of uppercase alphabetic characters that must be in the password. The default is 2. The -s flag defines the minimum number of special characters that must be in the password. The default is 1. The -p flag names a program to set the password. By default, /etc/yppasswd is used if present, otherwise /bin/passwd is used. The -2 flag causes characters to be chosen so that they alternate between right and left hands (qwerty-style), making it harder for anyone watching passwords being entered. This can also make it easier for a password-guessing program. The -v flag causes the password-setting interaction to be visible. By default, it is suppressed. EXAMPLE
The following example creates a 15-character password that contains at least 3 digits and 5 uppercase characters. mkpasswd -l 15 -d 3 -C 5 SEE ALSO
"Exploring Expect: A Tcl-Based Toolkit for Automating Interactive Programs" by Don Libes, O'Reilly and Associates, January 1995. AUTHOR
Don Libes, National Institute of Standards and Technology mkpasswd is in the public domain. NIST and I would appreciate credit if this program or parts of it are used. 22 August 1994 MKPASSWD(1)
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