package process import ( "fmt" "os" "strconv" ) func WritePIDFile(pidFile string) error { pid := os.Getpid() if pid == 0 { return fmt.Errorf("failed to get process ID") } pidStr := strconv.Itoa(pid) if err := os.WriteFile(pidFile, []byte(pidStr), 0644); err != nil { return fmt.Errorf("failed to write PID file: %w", err) } return nil } func RemovePIDFile(pidFile string) { _ = os.Remove(pidFile) }