how to get root access

Hello,

 

I have a device as a tc 75 with android 6.0.

I used visual studio 2015 and xamarin for to make an app.

 

I know a little ADB utility and i can get the host file locate under system/etc ...

I have added some links into this file with notepad++.

 

Now, i would like to PUSH this file to return home

I would like to push this file under system/etc but every time i receive some error :

 

adb: error: failed to copy 'd:\android\hosts' to 'system/etc/hosts': Read-only file system

 

How i can push a file to the system root folder or system/etc ...

How i can have the root right ?

 

thanks for your time

Christophe