Perl script that provides input to batch file

Question

I have a batch file "Sample.bat" which I am running using Perl: system("Sample.bat");

Sample.bat prompts for username and password, these username and password I want to give using a Perl script. For example, when I run this batch file using Perl:

Enter username:
Enter password:

These two things I have to provide using the Perl script.

Batch file:

@echo off
set /p username=Enter your username:%1
set /p password=Enter your password:%2

Perl Script:

my $username="Shaggy";
my $password="shaggy";

my $setup = "C:/sample.bat";
system("$setup $username $password");

score 1 · Accepted Answer · 2012-03-18 08:32:01Z

1

Use Win32::GuiTest Module

use strict;
use warnings;
use Win32::GuiTest qw[ SendKeys ];

system 1, q["start sample.bat"];

SendKeys( 'username~');

SendKeys( 'password~');

Note that ~ sign is for Enter key i.e. you don't have to use Enter key during execution.So use ~ sign in SendKeys method.
Update: Remove %1 and %2 and try above script.

edited Mar 18, 2012 at 8:32

answered Mar 18, 2012 at 7:32

user966588

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Community · Accepted Answer · 2017-05-23 12:18:04Z

0

Try:

my $username = 'yourusername';
my $password = 'yourpassword';
system("Sample.bat $username $password");

Then within the batch file, you'll use %1 for username and %2 for password.

For further information about using parameters in a batch file, see: How do I pass command line parameters to a batch file?

edited May 23, 2017 at 12:18

CommunityBot

11 silver badge

answered Mar 18, 2012 at 7:13

vol7ron

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6 Comments

Shaggy Over a year ago

In my scenario, I dont want to edit that batch file. Do we have any things which will do the work and batch file also is not edited.

vol7ron Over a year ago

no. not without some serious programming. you would have to get the window handle of the created prompt window, find the resource id's of the text fields and populate that way. I'm not sure how to do that with Perl and it's been a while since I've done anything like that with C. imo, not worth the effort, either modify the batch file, or create a copy that you can modify.

DavidO Over a year ago

If you don't want to modify the batch file, perhaps you could avoid it altogether. Anything it's doing you could implement either within Perl or via system/backticks/pipe.

Shaggy Over a year ago

@vol7ron, when I run my program using above contents, the output waits for user to press enter manually. For eg: Enter username: Shaggy, then it waits for me to press enter. Please have a look at it I want that it should go on.

vol7ron Over a year ago

@Shaggy: devendra's solution might do all the grunt work I was talking about above. without seeing the output, I'm not sure what the hang is - I'm assuming you're talking about the batch file

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