以下是一个使用snmpget命令获取UPS设备性能指标的Shell脚本示例，并按照Prometheus Metrics标准格式输出：
#!/bin/bash
# SNMP community
community="public"
# UPS OID
ups_oid=".1.3.6.1.2.1.33"
# UPS performance indicators
indicators=(
"upsIdentManufacturer"
"upsBatteryStatus"
"upsInputLineBads"
"upsOutputSource"
)
# Loop through each indicator and get its value using snmpget command
for indicator in "${indicators[@]}"
do
result=$(snmpget -v 2c -c "$community" localhost "$ups_oid.$indicator")
value=$(echo $result | awk '{print $4}')
# Print the metric in Prometheus Metrics standard format
echo "# HELP ups_$indicator The value of UPS $indicator"
echo "# TYPE ups_$indicator gauge"
echo "ups_$indicator{host=\"localhost\"} $value"
done
该脚本将在本地主机上执行SNMP查询以获取UPS设备的四个性能指标，然后将它们打印为Prometheus Metrics格式。您可以将这些输出重定向到文件中，或者使用Prometheus自带的Node Exporter等工具来收集并暴露这些指标。
