I have another problem though. I'm not able to perform a simple function which checks are you dealing with file or directory.

In BASH you execute [ -d $ ] && echo "Folder exists." || "Folder does NOT exist." and where $ is the file or folder in certain path (e.g. /home/user).

If I'm executing this command in terminal it displays the result depending is it a file or directory. When using Process QML it doesn't. Any suggestions?

EDIT: Also I noticed that pwd or cd $ where $ is folder where you want to go does not work either. They simply doesn't ouput anything, just error.