automatic initialization of the axis interface in full screen

Good morning, I am assembling an industrial machine. I made Linuxcnc start at system startup, but the axis interface only opens in a corner of the screen and I have to press it every time to occupy the entire screen, I was wondering if you could help me with this, I want Linuxcnc to open taking up the entire screen when I start the system

When you made the config, wizards have a setting to choose from what size the screen should be or to fully maximize it.
Use the wizard to edit the config and select maximize, but only if you did not hand edit the configuration files.
For Axis GUI, the is a hidden file in the home folder named .axisrc or similar that you can edit to do that.
There are probably other ways, but i do not know them.

I just wanted to add to Tommylight's answer - and for my own reference.

Here is how to configure the Axis GUI to start in fullscreen:

Create a new configuration file in your home directory (or edit the existing one, mine was absent) called .axisrc, open a terminal and run:
Add the following code to the .axisrc file:
Press 'ctl + x' then 'y' to save and exit nano in the terminal.

For these changes to take effect restart the Axis GUI (or restart the system).

The Axis GUI window will now occupy the entire screen, hiding the window borders and title bar. It will cover all OS navigation bars and menus.
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More info:

Thread on .axisrc, including parameters you can configure:
forum.linuxcnc.org/forum/21-axis/29735-axis-modifications

Documentation on .axisrc can be found here:
linuxcnc.org/docs/2.7/html/gui/axis.html#_axisrc

If you want LinuxCNC to start the machine automatically in fullscreen upon starting the system you can: 

Enable automatic login:
linuxcnc.org/docs/stable/html/common/lin...tml#_automatic_login

Launch a LinuxCNC machine upon login:
linuxcnc.org/docs/stable/html/common/lin...l#_automatic_startup

NOTE: use alt + tab to navigate between programs in fullscreen mode

My system info Debian 10, Xcfe, LinuxCNC version 2.8.0

that's a very good idea！Cheers!

In the latest linuxcnc also works:

root_window.attributes('-zoomed', True)