PrtSc: Take a screenshot of the entire screen and save it to the Pictures directory.
Shift + PrtSc: Take a screenshot of a certain area of the screen and save it to the Pictures directory.
Alt + PrtSc: Take a screenshot of the current window and save it to the Pictures directory.
Ctrl + PrtSc: Take a screenshot of the entire screen and save it to the clipboard.
Shift + Ctrl + PrtSc: Take a screenshot of a certain area of the screen and save it to the clipboard.
Ctrl + Alt + PrtSc: Take a screenshot of the current window and save it to the clipboard.
The screenshot will be automatically saved in the Pictures folder

DEBIX supports automatic mounting of USB storage devices, and it can also be mounted by modifying /etc/fstab;

Yes.

If you want to modify the startup animation, please provide the bmp picture for us to add to the kernel image.

Run hostnamectl to view the hostname of the current system
Use the following command to change the hostname:
hostnamectl set-hostname [YOUR NEW HOSTNAME]

debix, debix

(1) Plug in the Ethernet cable to get DEBIX connected to the internet, run command sudo apt install isc-dhcp-client to get dhclient command.
(2) Run command sudo ifconfig wlan0 up
(3) Create file /etc/wpa_supplicant/wpa_supplicant.conf with the following contents:
network={
ssid="polyhex_mi1"
psk="bohai2021"
}
Substitute the ssid and psk with your wifi name and wifi password.
(4) Run command sudo wpa_supplicant -i wlan0 -c /etc/wpa_supplicant/wpa_supplicant.conf -B (if error "Device or resource busy" is thrown, try command "sudo killall wpa_supplicant")
(5) Run command sudo dhclient wlan0
Then you can check whether DEBIX can connect to the internet through ping command

(1) Install JDK
sudo apt update
sudo apt install default-jdk -y
(2) Run the file
java -jar file name.jar

sudo apt install tightvncserver
vncserver -geometry resolution

Please refer to DEBIX User Manual documentation on website https://www.debix.io