I wonder if it is possible to use dialog gauge option to create a graphic displaying the percentage of disk used vs disk capacity? And if so, how could I do it?

Generically speaking, how can I use dialog to compare between two different values?

  • Tell us more about dialog: What is it? Feb 22 '20 at 10:26
  • Citing the below mentioned webpage, dialog is " a program that will let you to present a variety of questions or display messages using dialog boxes from a shell script. These types of dialog boxes are implemented (though not all are necessarily compiled into dialog): calendar, checklist, dselect, editbox, form, fselect, gauge, infobox, inputbox, inputmenu, menu, mixedform, mixedgauge, msgbox (message), passwordbox, passwordform, pause, progressbox, radiolist, tailbox, tailboxbg, textbox, timebox, and yesno (yes/no)." linux.die.net/man/1/dialog
    – Strelok
    Feb 22 '20 at 10:56

You might want to take a look at ncdu, if you want or need a disk-usage utility with a textual user interface. It's based on ncurses, which is what dialog is based on as well. By default, it shows a column, which can be toggled (g), with a graphical representation of the size of the various files and directories.


If you are trying to write a program, however, then show what you've tried and ask for help here or on stackoverflow.

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