materio-base-d7/sites/all/modules/contrib/mail/maillog/maillog_test.bsh

#!/bin/bash

drush --always-set vset devel_old_smtp_library "foo/bar"; 
drush --always-set vset smtp_library "foo/bar"; 
drush vget smtp_library
echo -e "\n\t\tUninstall with variables set to 'foo/bar':\n"
echo y | drush dis maillog
echo y | drush pm-uninstall maillog
echo -e "\n\t\t Show variables:\n"
drush vget smtp_library
echo y | drush en maillog
echo -e "\n\t\t Show variables after installation:\n"
drush vget smtp_library
drush --always-set vset devel_old_smtp_library "sites/all/modules/maillog/includes/maillog.inc"; 
drush vget smtp_library
echo -e "\n\t\tUninstall with variables set to 'sites/all/modules/maillog/includes/maillog.inc:\n"
echo y | drush dis maillog
echo y | drush pm-uninstall maillog
echo -e "\n\t\t Show variables:\n"
drush vget smtp_library
echo y | drush en maillog
echo -e "\n\t\t Show variables after installation:\n"
drush vget smtp_library