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Top Forums Shell Programming and Scripting how do I handle ssh response with expect Post 302221466 by popeye on Monday 4th of August 2008 01:27:58 PM
Old 08-04-2008
how do I handle ssh response with expect

I am trying to write an expect script that trys to telnet, if telnet fails, trys to ssh to a remote network devices.

The script works fine until the following is received :

spawn telnet 10.3.2.24
Trying 10.3.2.24...
telnet: connect to address 10.3.2.24: Connection refused
10.3.2.24 is not reachable!!
spawn ssh -l myname 10.3.2.24
The authenticity of host '10.3.2.24 (10.3.2.24)' can't be established.
RSA key fingerprint is b1:z6:22:85:3a:a6:z0:ae:6d:b3:9d:f6:77:85:01:aa.
Are you sure you want to continue connecting (yes/no)?

Ive added

expect {continue connecting*} {send "yes\r"}

at different places within the telnet host not reachable section, but cant
get expect to respond.

Ive added the entire script below for those who may want to look at it.







#! /usr/local/bin/expect --
#
# Setup Log file that will contain all steps of the process.
#============================================================
puts "[exec clear]"
set nam "[ clock format [ clock seconds ] -format "%m%d%H%M" ].log"
log_file -a $nam
#
# Open Seedfile and setup log containing failed connections.
#=============================================================
set ifil [open "seedfileofips" r]
set ofil [open "[ clock format [ clock seconds ] -format "%m%d%H%M" ].err" w]
###
# Main Body. While reading the seedfile, telnet to site
# or ssh to site
#=============================================================
while { [gets $ifil host] >=0 } {
send_user "Standby ... Validating ... $host \n"
puts "[exec clear]"
set taclnam "myname"
set tacpswd "mypassword"
set timeout 30
spawn telnet $host

expect {
{telnet:*} {
puts "$host is not reachable!!"
spawn ssh -l myname $host
expect {password:*} {
send "mypassword\n"
expect ">"
send "en\n"
expect "word:*"
send "mypassword\n"
expect "#"
interact
continue
}
}
{timeout} {
puts ""
puts "$host timed out...Router is probably down!!"
expect eof
wait
return
}
{Unknown*} {
expect eof
wait
return
}
{sername:*} {
send "mypassword\n"
expect "ord:"
send "$mypassword\n"
expect ">"
send "en\n"
expect "assword:"
send "$mypassword\n"
expect "#"
interact
continue
}
}
}
 

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Regexp::Common::URI::telnet(3)				User Contributed Perl Documentation			    Regexp::Common::URI::telnet(3)

NAME
Regexp::Common::URI::telnet -- Returns a pattern for telnet URIs. SYNOPSIS
use Regexp::Common qw /URI/; while (<>) { /$RE{URI}{telnet}/ and print "Contains a telnet URI. "; } DESCRIPTION
$RE{URI}{telnet} Returns a pattern that matches telnet URIs, as defined by RFC 1738. Telnet URIs have the form: "telnet:" "//" [ user [ ":" password ] "@" ] host [ ":" port ] [ "/" ] Under "{-keep}", the following are returned: $1 The complete URI. $2 The scheme. $3 The username:password combo, or just the username if there is no password. $4 The username, if given. $5 The password, if given. $6 The host:port combo, or just the host if there's no port. $7 The host. $8 The port, if given. $9 The trailing slash, if any. REFERENCES
[RFC 1738] Berners-Lee, Tim, Masinter, L., McCahill, M.: Uniform Resource Locators (URL). December 1994. SEE ALSO
Regexp::Common::URI for other supported URIs. AUTHOR
Damian Conway (damian@conway.org) MAINTAINANCE
This package is maintained by Abigail (regexp-common@abigail.be). BUGS AND IRRITATIONS
Bound to be plenty. LICENSE and COPYRIGHT This software is Copyright (c) 2001 - 2009, Damian Conway and Abigail. This module is free software, and maybe used under any of the following licenses: 1) The Perl Artistic License. See the file COPYRIGHT.AL. 2) The Perl Artistic License 2.0. See the file COPYRIGHT.AL2. 3) The BSD Licence. See the file COPYRIGHT.BSD. 4) The MIT Licence. See the file COPYRIGHT.MIT. perl v5.16.2 2010-02-23 Regexp::Common::URI::telnet(3)
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