I have to run a command in my perl script by using the back ticks. when i execute that command it asks me for password. Now i wanna pass that password without typing it. for clear understanding of the problem here it goes:

`run the command line`;
[download]

now it asks me for password. What i want to do is capture is prompt and pass the password in the script itself rather then typing it all the times. So how do i caputre when the output when it prompts me for the password.

Originally posted as a Categorized Question.