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Full Discussion: expect in bash script
Top Forums Shell Programming and Scripting expect in bash script Post 302588660 by dude2cool on Monday 9th of January 2012 03:30:30 PM
Old 01-09-2012
So you have a script that spits out a prompt for user to enter yes or no. You want to automate this via expect, so that the responses can be passed onto this script? right?

if so, consider this example, it will give you an hint. Here is an example of using expect with fsck, something similar to what you are trying:

Disclaimer: This code is not mine, just found it on the interweb.
Code:
spawn fsck
for {} 1 {} {
expect eof break \
{*UNREF\ FILE*CLEAR?\ } {send y\r} \
{*BAD\ INODE*FIX?\ } {send y\r} \
{*?\ } {send n\r}
}

here is another good URL:

6 Expect Script Examples to Expect the Unexpected (With Hello World) (link removed)

Look at section 3 , Automate User Processes With Expect
 

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LEARN ABOUT DEBIAN

test::expect

Test::Expect(3pm)					User Contributed Perl Documentation					 Test::Expect(3pm)

NAME

       Test::Expect - Automated driving and testing of terminal-based programs

SYNOPSIS

	 # in a t/*.t file:
	 use Test::Expect;
	 use Test::More tests => 13;
	 expect_run(
	   command => "perl testme.pl",
	   prompt  => 'testme: ',
	   quit    => 'quit',
	 );
	 expect("ping", "pong", "expect");
	 expect_send("ping", "expect_send");
	 expect_is("* Hi there, to testme", "expect_is");
	 expect_like(qr/Hi there, to testme/, "expect_like");

DESCRIPTION

       Test::Expect is a module for automated driving and testing of terminal-based programs.  It is handy for testing interactive programs which
       have a prompt, and is based on the same concepts as the Tcl Expect tool.  As in Expect::Simple, the Expect object is made available for
       tweaking.

       Test::Expect is intended for use in a test script.

SUBROUTINES

   expect_run
       The expect_run subroutine sets up Test::Expect. You must pass in the interactive program to run, what the prompt of the program is, and
       which command quits the program:

	 expect_run(
	   command => "perl testme.pl",
	   prompt  => 'testme: ',
	   quit    => 'quit',
	 );

   expect
       The expect subroutine is the catch all subroutine. You pass in the command, the expected output of the subroutine and an optional comment.

	 expect("ping", "pong", "expect");

   expect_send
       The expect_send subroutine sends a command to the program. You pass in the command and an optional comment.

	 expect_send("ping", "expect_send");

   expect_is
       The expect_is subroutine tests the output of the program like Test::More's is. It has an optional comment:

	 expect_is("* Hi there, to testme", "expect_is");

   expect_like
       The expect_like subroutine tests the output of the program like Test::More's like. It has an optional comment:

	 expect_like(qr/Hi there, to testme/, "expect_like");

   expect_handle
       This returns the Expect object.

expect_quit
       Closes the Expect handle.

SEE ALSO

       Expect, Expect::Simple.

AUTHOR

       Leon Brocard, "<acme@astray.com>"

COPYRIGHT

       Copyright (C) 2005, Leon Brocard

       This module is free software; you can redistribute it or modify it under the same terms as Perl itself.

perl v5.12.3							    2011-06-12							 Test::Expect(3pm)
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