Using system command in Qt

Question

How can I use the system command where the command is written in a QString?

Like:

QString command="chmod -R 777 /opt/QT/examples/code/TestGUI/Data";    
system(command);

While compiling, I get this error:

cannot convert ‘QString’ to ‘const char*’
  for argument ‘1’ to ‘int system(const char*)’

Can anyone suggest something?

Answer 1

Use the qPrintable() macro

system(qPrintable(command));

Answer 2

You need get the raw character array from the QString. Here is one way:

system(command.toStdString().c_str());