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package main
import (
"fmt"
"os"
"time"
)
func main() {
// Open the file in append mode, create it if it doesn't exist
file, err := os.OpenFile("output.txt", os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
fmt.Fprintf(os.Stderr, "filewriter: failed to open output file: %v\n", err)
os.Exit(1)
}
defer file.Close()
// Define the byte to be written
data := []byte("A") // Replace 'A' with any byte you wish to write
// Loop to write the byte every 3 seconds
for {
_, err := file.Write(data)
if err != nil {
fmt.Fprintf(os.Stderr, "filewriter: failed to write data: %v\n", err)
os.Exit(1)
}
// Flush writes to stable storage
err = file.Sync()
if err != nil {
fmt.Fprintf(os.Stderr, "filewriter: failed to sync file: %v\n", err)
os.Exit(1)
}
// Wait for 3 seconds
time.Sleep(3 * time.Second)
}
}
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