50 lines
1.6 KiB
Bash
50 lines
1.6 KiB
Bash
#!/bin/bash
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# Replace these variables with your actual values
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EMAIL_TO=""
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EMAIL_SUBJECT="UPS Battery Critically Low"
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SENDER_ADDRESS=""
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TIMESTAMP_FILE="/tmp/last_email_sent_timestamp_critically_low"
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# Check the UPS battery percentage using the apcaccess command
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battery_percentage=$(apcaccess status 2>/dev/null | awk '/BCHARGE/ {print $3}')
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# Define the threshold as a floating-point number
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threshold=30.0
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# Get the current timestamp
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current_timestamp=$(date +%s)
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# Read the last email sent timestamp from the file (if it exists)
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if [ -f "$TIMESTAMP_FILE" ]; then
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last_email_timestamp=$(cat "$TIMESTAMP_FILE")
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else
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last_email_timestamp=0
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fi
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# Calculate the time elapsed since the last email
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time_elapsed=$((current_timestamp - last_email_timestamp))
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# Compare battery percentage with the threshold using bc
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if (( $(echo "$battery_percentage <= $threshold" | bc -l) )) && [ "$time_elapsed" -ge 1800 ]; then
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echo "UPS battery is at or below $threshold%. Sending email alert."
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# Get estimated remaining runtime
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remaining_runtime=$(apcaccess status 2>/dev/null | awk '/TIMELEFT/ {print $3}')
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# Send email using ssmtp
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{
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echo "To: $EMAIL_TO"
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echo "From: $SENDER_ADDRESS"
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echo "Subject: $EMAIL_SUBJECT"
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echo
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echo "UPS battery is at or below $threshold%."
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echo "Current Level: $battery_percentage%"
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echo "Estimated time remaining: $remaining_runtime"
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} | ssmtp -vvv $EMAIL_TO
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# Update the last email sent timestamp
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echo "$current_timestamp" > "$TIMESTAMP_FILE"
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else
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echo "UPS battery is above $threshold% or email was sent recently. No action needed."
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fi
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