From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jone <yeger9@gmail.com>
Subject: Customize PAM configuration
Date: Fri, 9 Aug 2019 17:58:07 +0000
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Hello! I want enter user/root password only once per session. To do this,
it will probably be convenient to export the password to shell variable.
For example, adding this to PAM configuration file:

   auth sufficient pam_exec.so expose_authtok /path/to/script.sh

But how to write it in system-config.scm? Sorry, I couldn't find any examples.