Daily tip

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:

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