A brief look at how to move Window control buttons to left side in Debian, Kali and Ubuntu Linux
In the terminal
org > gnome > desktop > wm > preferences
click on button-layout value, where appmenu:minimize,maxmize,close is written.
And change it to close,maximize,minimize:appmenu
At this point you can save and exit, you should also be able to see the changes reflected on the windows now.
Tutorial created by 0x6f0