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Full Discussion: Expect Script square bracket dollar prompt
Top Forums Shell Programming and Scripting Expect Script square bracket dollar prompt Post 302400732 by Ikaro0 on Thursday 4th of March 2010 03:32:40 AM
Old 03-04-2010
Hi,
Thanks a log for the quick replay but I think it is not good cause it sems that no matter what if founds it continues.

I'll explain better the situation:

Environment: Production, servers don't allow for root ssh connections.

The need that I had was to create a script for creating users on all the servers (more than 200 Unix,Linux)

What I've done so far is:

I had created a script that login each server with gets "user login name", "user password" and "user to be created"

The the script reads from a file, the servername and rootpassword and apss all the information to the expect script in form of parameters

The expect script uses the parameters ($0 $1.....) for connecting to the servers as the entered user, puts the password, changes to root, sends useradd....."user to be created" and then logs of and continue to the next one.

The thing here is that the script works but due to differences on the servers I need to cover all the posibilities for it to work fast and without error.

for login I had the following at the script:

spawn ssh $username@$ipaddr
match_max 100000
Code:
expect_after {
    eof {send_log "\nEXP-ERROR---No se ha podido conectar con $ipaddr\n" ; exit 1 }
}
expect {
        timeout {send_log "\nEXP-ERROR---TIMEOUT No se ha podido conectar con $ipaddr\n" ; exit 1 }
        "(yes/no)?"   {send "yes\n"}
        "*?assword:" {send "$userpass\r"}
        }

and then :

Code:
expect  {
        ".*\?"      {send "\n";sleep 1;send "\n"} ----for servers that ask for oraclehome
        ".*\$"          {send_log "\nEXP-EXEC---Login correcto\n"}
        "*?assword:"    {send_log "\nEXP-ERROR---Password de usuario $username incorrecto o usuario inexistente en $ipaddr" ; exit 1 }
        }

because I set timeout to -1 the script waits for ever when it logs into a server with the prompt "[whatever]$"

but putting the timeout to 5(for example) I pass (waiting) the $ paths and after entered "su -" and password, it recognise well the "[whatever]#" prompt for root and don't wait at all, sending the useradd command in no time.

Thanks a lot
 

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LEARN ABOUT DEBIAN

ppix::regexp::constant

PPIx::Regexp::Constant(3pm)				User Contributed Perl Documentation			       PPIx::Regexp::Constant(3pm)

NAME

       PPIx::Regexp::Constant - Constants for the PPIx::Regexp system

SYNOPSIS

	use PPIx::Regexp::Constant qw{ TOKEN_UNKNOWN }
	print "An unknown token's class is TOKEN_UNKNOWN
";

INHERITANCE

       "PPIx::Regexp::Constant" is an Exporter.

       "PPIx::Regexp::Constant" has no descendants.

DETAILS

       This module defines manifest constants for use by the various "PPIx::Regexp" modules. These constants are to be considered private to the
       "PPIx::Regexp" system, and the author reserves the right to change them without notice.

       This module exports the following manifest constants:

   COOKIE_CLASS
       The name of the cookie used to control the construction of character classes.

       This cookie is set in PPIx::Regexp::Token::Structure when the left square bracket is encountered, and cleared in the same module when a
       right square bracket is encountered.

   COOKIE_QUANT
       The name of the cookie used to control the construction of curly bracketed quantifiers.

       This cookie is set in PPIx::Regexp::Token::Structure when a left curly bracket is encountered. It requests itself to be cleared on
       encountering anything other than a literal comma, a literal digit, or an interpolation, or if more than one comma is encountered. If it
       survives until PPIx::Regexp::Token::Structure processes the right curly bracket, it is cleared there.

   COOKIE_QUOTE
       The name of the cookie used to control the parsing of "Q ... E" quoted literals.

       This cookie is set in PPIx::Regexp::Token::Control when a "Q" is encountered, and it persists until the next "E".

   MINIMUM_PERL
       The minimum version of Perl understood by this parser, as a float. It is currently set to 5.000, since that is the minimum version of Perl
       accessible to the author.

   MODIFIER_GROUP_MATCH_SEMANTICS
       The name of the PPIx::Regexp::Token::Modifier group used to control match semantics.

   RE_CAPTURE_NAME
       A string representation of a regular expression that matches the name of a named capture buffer.

   STRUCTURE_UNKNOWN
       The name of the class that represents the unknown structure. That is, PPIx::Regexp::Structure::Unknown.

   TOKEN_LITERAL
       The name of the class that represents a literal token. That is, PPIx::Regexp::Token::Literal.

   TOKEN_UNKNOWN
       The name of the class that represents the unknown token. That is, PPIx::Regexp::Token::Unknown.

SUPPORT

       Support is by the author. Please file bug reports at <http://rt.cpan.org>, or in electronic mail to the author.

AUTHOR

       Thomas R. Wyant, III wyant at cpan dot org

COPYRIGHT AND LICENSE

       Copyright (C) 2009-2012 by Thomas R. Wyant, III

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl 5.10.0. For more details, see the full
       text of the licenses in the directory LICENSES.

       This program is distributed in the hope that it will be useful, but without any warranty; without even the implied warranty of
       merchantability or fitness for a particular purpose.

perl v5.14.2							    2012-06-06					       PPIx::Regexp::Constant(3pm)
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