well, when u run a command using QProcess, u pass the whole command as one argument ONLY.. so the right way to do it as u have done here:

Qt Code:
  1. arguments << "-c" << "gksudo -- mount -o loop /media/100GB/test.iso /media/iso";
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so if u wanna pass different arguments, at the end of the day u have add them to the command as ONE string