Add pwrstatd config and scripts

pwrstatd/pwrstatd-lowbatt.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+echo "Warning: The UPS's battery power is not enough, system will be shutdown soon!" | wall
+
+# Enable to send email
+enable_email="yes"
+
+# Send email using "/etc/sg-send-mail.sh" script
+email_from=""
+email_to=""
+email_sender=""
+
+if [[ $enable_email == "yes" ]]; then
+        /etc/sg-send-email.sh -f ${email_from} -n ${email_sender} -t ${email_to} -s "UPS's battery running low'" -m "$(date)"
+fi