Untar a file in an OS X directory with QProcess

Question

I'm trying to untar a file with QProcess that's in a directory returned by QDir::tempPath(), as follows:

extract.start("tar", QStringList() << "-xvzf" + QDir::tempPath() + "/thefile.tar.gz");

I get the correct output for an extraction by looking at the standardOuput for the QProcess but there's no file extracted at the end. Manually running tar from a shell works fine on the file so I know it's not corrupt, I'd have assumed a permissions issue but I'm actually downloading the file with the application to the temporary directory so the application should have write access.

Edit: I've also now tried it with the file in the home directory, it's definitely there but I get the same results as it being in the temp directory, verbose output indicating success but no resulting file.

Answer 1

You need to set the working directory, which by default, is likely to be the folder of the executable's binary.

You can set the working directory with QProcess::setWorkingDirectory