get system cpu temperature in celsius in go

main.go
package main

import (
    "fmt"
    "os"
    "os/exec"
    "regexp"
    "strconv"
)

func main() {
    // Run the "sensors" command
    cmd := exec.Command("sensors")
    output, err := cmd.Output()
    if err != nil {
        fmt.Println("Error:", err)
        os.Exit(1)
    }

    // Extract the CPU temperature from the output
    re := regexp.MustCompile(`^Core\s\d+:\s+\+(.*?)°C`)
    matches := re.FindAllStringSubmatch(string(output), -1)
    if len(matches) == 0 {
        fmt.Println("Error: could not find CPU temperature in output")
        os.Exit(1)
    }
    tempStr := matches[0][1]

    // Convert the temperature to a float64 value in Celsius
    temp, err := strconv.ParseFloat(tempStr, 64)
    if err != nil {
        fmt.Println("Error:", err)
        os.Exit(1)
    }

    // Print the temperature in Celsius
    fmt.Printf("CPU temperature: %.1f°C\n", temp)
}
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