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From: PerlFAQ Server on 11 May 2010 00:00
This is an excerpt from the latest version perlfaq8.pod, which
comes with the standard Perl distribution. These postings aim to
reduce the number of repeated questions as well as allow the community
to review and update the answers. The latest version of the complete
perlfaq is at http://faq.perl.org .

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8.9: How do I ask the user for a password?

(This question has nothing to do with the web. See a different FAQ for
that.)

There's an example of this in "crypt" in perlfunc). First, you put the
terminal into "no echo" mode, then just read the password normally. You
may do this with an old-style "ioctl()" function, POSIX terminal control
(see POSIX or its documentation the Camel Book), or a call to the stty
program, with varying degrees of portability.

You can also do this for most systems using the "Term::ReadKey" module
from CPAN, which is easier to use and in theory more portable.

use Term::ReadKey;

ReadMode('noecho');
$password = ReadLine(0);



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The perlfaq-workers, a group of volunteers, maintain the perlfaq. They
are not necessarily experts in every domain where Perl might show up,
so please include as much information as possible and relevant in any
corrections. The perlfaq-workers also don't have access to every
operating system or platform, so please include relevant details for
corrections to examples that do not work on particular platforms.
Working code is greatly appreciated.

If you'd like to help maintain the perlfaq, see the details in
perlfaq.pod.
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