How can I display a dialog box in a shell?
Through the utility dialog which must be installed.
Then you can run it in your scripts, for instance the below code:
#!/bin/bash
dialog --infobox "Installation Wizard" 6 25
sleep 1
dialog --yesno "Would you like to continue?" 12 25
if [ $? -ne 0 ]; then
echo "User cancelled the operation!"
exit 1
fi…