Notices

void MainWindow::on_pushButtonStart_clicked()
{
    QProcess process;
    process.start("sh /opt/tenminutecore/script/tenminutecore.sh");
}

void MainWindow::on_pushButtonStop_clicked()
{
    QProcess process;
    process.start("sh /opt/tenminutecore/script/kill.sh");
    process.waitForFinished();
}

#!/bin/sh

/opt/tenminutecore/script/tenminutecore.sh

process.start("yourscriptname.sh");

  pid_t pid = fork();

  if (pid == 0)
  {
    // We're inside the child process
    execl(
      "/bin/sh",
      "/bin/sh",
      "/opt/tenminutecore/script/tenminutecore.sh",
      NULL);
  }

  // If we reach this point, we are inside the parent process.
  // So, we'll wait for the child process to complete:
  int *stat_loc = NULL;
  waitpid(pid, stat_loc, 0);

void MainWindow::on_pushButtonStart_clicked()
{
    QProcess *process;
            process = new QProcess( this );
            process->start("sh opt/tenminutecore/script/tenminutecore.sh");
}

void MainWindow::on_pushButtonStop_clicked()
{
    QProcess *process;
            process = new QProcess( this );
            process->start("sh opt/tenminutecore/script/kill.sh");
            process->waitForFinished();
}

private:
    QProcess *m_process;

#include <QApplication>
#include <QDesktopWidget>

...

connect(QApplication::desktop(), SIGNAL(resized(int)), this, SLOT(onOrientationChanged()));

...

void MainWindow::onOrientationChanged() {
   QRect screen = QApplication::desktop()->screenGeometry();

    if (screen.width() > screen.height()) {
        setLandscapeLayout();
    }
    else {
        setPortraitLayout();
    }
}

void MainWindow::setLandscapeLayout() {
   do stuff
}

void MainWindow::setPortraitLayout() {
   do stuff
}