A yes/no dialog box
From Linux Shell Scripting Tutorial - A Beginner's handbook
- You can display a yes/no dialog box using the following syntax:
dialog --common-options --yesno text height width
- This dialog box is useful for asking questions that require the user to answer either yes or no.
- The dialog box has a Yes button and a No button, in which the user can switch between by pressing the TAB key.
- On exit, no text is written to dialog’s output. In addition to the "Yes" and "No" exit codes and ESC exit status may be returned as follows:
- 0 - Yes chosen.
- 1 - No chosen.
- 255 - Escape key was pressed i.e. box closed.
- Create a script called dynbox.sh:
#!/bin/bash # dynbox.sh - Yes/No box demo dialog --title "Delete file" \ --backtitle "Linux Shell Script Tutorial Example" \ --yesno "Are you sure you want to permanently delete \"/tmp/foo.txt\"?" 7 60 # Get exit status # 0 means user hit [yes] button. # 1 means user hit [no] button. # 255 means user hit [Esc] key. response=$? case $response in 0) echo "File deleted.";; 1) echo "File not deleted.";; 255) echo "[ESC] key pressed.";; esac
Save and close the file. Run it as follows:
chmod +x dynbox.sh ./dynbox.sh