Question

Using expect to install an rpm package

Asked by: atxtechie

I am a QE tester attempting to automate an installation script on Redhat 5 for one of our software offerings. I am needing to run a script that shows an End-User license agreement and asks the installer to type Yes or no before continuing to install an rpm package. I am trying to use expect to complete this job. I created a script to install this package. When the script is run, the end-user needs to hit the 'q' button to get past the license information or hit space 4 times, then they need to type 'yes', after that the installer should install the package. What I am finding is that the expect script gets up to the point where the question is prompted and then it stops, nothing is installed. I am running the expect script as root. I have attached the expect script. Does anyone know what I am doing wrong?

#!/usr/local/bin/expect
 
spawn sh /home/user/DIConnectivityMain-9.2.3.64-linux.sh
expect "More"
send "q"
expect "Do you agree to the above license terms?"
send "yes\r"

                                  
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Asked On
2009-10-26 at 07:53:23ID24843719
Tags

expect script perl

Topics

Perl Programming Language

,

Bourne Shell (sh)

,

TCL Scripting Language

Participating Experts
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Answers

 

by: JIEXAPosted on 2009-10-26 at 13:27:36ID: 25666439

Try: send "q\n"

 

by: arober11Posted on 2009-10-29 at 00:18:30ID: 25691222

Also disable the timeout e.g.

#!/usr/local/bin/expect
set timeout -1
spawn sh /home/user/DIConnectivityMain-9.2.3.64-linux.sh
expect "More"
send "q\r"
expect "Do you agree to the above license terms?"
send "yes\r"
                                              
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by: simon3270Posted on 2009-11-03 at 09:29:48ID: 25731326

I did the same thing to install Java on Linux boxes.  I had to put a "sleep 0.5" before the "send "q"" line (I didn't need the "\r" after the "q").

 

by: atxtechiePosted on 2009-12-03 at 07:04:58ID: 25962836

Thanks for the suggestions, but for some reason they did not work. However I did find a solution for me that worked. I embedded my expect script with a perl script and it works fine. Here is the code:

#!/usr/bin/perl
use strict;
use Expect;
 
my $app = shift;
$app = $ENV{'BM_HOME'} . "scripts/" . $app;
my $timeout=180;#seconds
 
$ENV{'PATH'}=$ENV{'PATH'} . "/usr/sbin";
 
my $exp = Expect->spawn($app)|| die "Couldn't spawn $app";
unless ($exp->expect($timeout, "More"))
{
    die "No license agreement shown, exiting.\n".$exp->exp_error()."\n";
}
$exp->send("q");
print "Recieved EULA\n";
 
while (!($exp->expect($timeout,  "pkgrm")))
{
    print "Sending response: yes\n";
    $exp->send("yes\n");
}
print "Successfully installed pkg.\n";
$exp->close();

                                              
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