![Linux text-based serial terminal program](https://kumkoniak.com/31.jpg)
Along the same lines, the kernel configuration program started as a (cut-down) copy of dialog, and then evolved into features using a shared library (without the original lxdialog program) much like the way newt is used from python.įrom bash - you could use either dialog or whiptail for the most commonly-used features. But you may also see newt used in Red Hat anaconda program as a shared library called from python (with the same appearance). Not accepting will cancel the installation.\n\nDo you accept the DLJ license terms?' $rows $((cols - 5))Īnd for comparison, screenshot with whiptail:īesides the different appearance of the title and buttons, dialog uses different colors by default (though that is configurable- see screenshots), and it uses fewer lines on the screen.ĭialog (and whiptail) use libraries for managing the display of lines, colors, etc. yesno '\nIn order to install this package, you must accept the license terms, the "Operating System Distributor License for Java" (DLJ), v1.1. $DIALOG -backtitle "Package configuration" \ Here is a script which duplicates the original screenshot, for either whiptail or dialog: #!/bin/sh The way the title and buttons are rendered is built into each program, making them look different. The screenshot in the question looks like whiptail (a functionally-reduced program imitating dialog, using newt rather than ncurses). This trick is needed because dialog by default outputs to stderr, not stdout.Īnd as always, man dialog is your friend.
![linux text-based serial terminal program linux text-based serial terminal program](https://opensource.com/sites/default/files/images/life-uploads/tty-konsole.png)
To store the output of the user choice into variable one needs to use -stdout option or change output descriptor either via -output-fd or manually, e.g.: output=$(dialog -backtitle "Package configuration" \
![linux text-based serial terminal program linux text-based serial terminal program](https://docklight.de/wp-content/uploads/2018/09/app1_docklight_scripting_screenshot_iot_test_device.png)
To give user multiple choices you can use -menu option instead of -yesno To put into the dialog box the output from some command just use command substitution mechanism $(), eg: dialog -backtitle "$(echo abc)" -title "$(cat file)". The user response is stored in the exit code, so can be printed as usual: echo $? (note that 0 means "yes", and 1 is "no" in the shell world).Ĭoncerning other questions from the comment section: yesno "\nBla bla bla.\n\nDo you accept?" 10 30
![linux text-based serial terminal program linux text-based serial terminal program](https://docs.toradex.com/107570-minicom.jpg)
Dialog -backtitle "Package configuration" \
![Linux text-based serial terminal program](https://kumkoniak.com/31.jpg)