Creating new folder to export project to gradle and change export gradle version?

Hello,
Finally, i have installed my Linux version of Unity2017.0.2 on Linux Mint. All works great except one thing.
Then i export my project to gradle, i have to create new folder for exporting everytime. In fact, Windows version allows you to export project to exact same folder as before and don’t override all files, only that has been changed.

  1. How can i fix it?

Also, i’m struggled with one thing, such as Unity2017.2.0 export gradle version 2.1.0 by default.
2. How can i change export gradle version to 2.3.3 (didn’t find it on project and build settings) ?

Best regards,
Alex.

Upd: it seems like Unity doesn’t save build settings. It requires Android SDK and JDK location on each build.

It seems that you need to modify build.gradle for this.

Thank you for your reply.

All the time, i doing it in this way, but i believed there is a filed in player settings to change gradle build.
So, it’s ok. Now i’m satisfied by knowing it. Thanks.

So, Could you help me by answering first question?

Best regards,
Alex.

Is someone interested in answering first question?