= GUI-or-CLI - Interfacce GUI e CLI per Linux
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:authors: Celestino Amoroso
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## Switch between GUI and CLI

To switch to text mode (also known as command-line interface or CLI) in systemd-based systems, you can use systemctl `set-default multi-user.target` to permanently change the default boot target. Alternatively, you can temporarily switch to text mode using `systemctl isolate multi-user.target`.

Here's a breakdown of how to switch to text mode:

### 1. Checking the Current Default Target*
First, it's helpful to know what your current default target is. You can check this with: 

  systemctl get-default

This command will display the current default target, which is likely `graphical.target` if you're currently in a graphical environment.


### 2. Permanently Switching to Text Mode (Multi-User Target)
To make text mode the default target on boot, use the following command:

  sudo systemctl set-default multi-user.target

After running this command, you will need to reboot your system for the change to take effect:

  sudo systemctl reboot

Now, when your system starts, it will boot directly into text mode. 


###3. Temporarily Switching to Text Mode (Using isolate)
If you want to switch to text mode without changing the default, you can use the isolate command:

  sudo systemctl isolate multi-user.target

This command will immediately switch your system to text mode without requiring a reboot. However, the next time you boot, it will revert to the default target (which you can set using set-default as described above).


### 4. Switching Back to Graphical Mode
To switch back to graphical mode, you can use the following command (if you previously used set-default):

  sudo systemctl set-default graphical.target

And then reboot:

  sudo systemctl reboot

Or, if you used isolate, you can switch back with:

  sudo systemctl isolate graphical.target

## Important Notes

### multi-user.target
This target represents a system with networking enabled but without a graphical interface (X server or Wayland).

### graphical.target
This target represents a system with a graphical interface.

### Reboot
When changing the default target, a reboot is necessary for the change to be applied.

### Temporary changes
Using isolate provides a temporary change that is not persistent across reboots. 

### Closing Applications
Switching to text mode will terminate any running graphical applications. Make sure to save your work before switching. 


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*Celestino Amoroso* +
*celestino . amoroso @ gmail . com*

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