#ifndef LogTail_H#define LogTail_H//start#include <QObject>#include <QProcess>/**    A simple example using QProcess and tail -f as an    external command.     Executes a process and connects its output signals to a Logger.    */class LogTail : public QProcess {    Q_OBJECT  public:    LogTail(QString fn = QString());    ~LogTail();  public slots:    void logOutput();};//end#endif