In batch you can use
msg * Hello World
to give a little popup window that says Hello world. Is there an command for shell script that does the same thing?
2 Answers
No.
bash has not been made with GUI in mind. Different commands may be available on different platforms, for instance:
Cygwin:
msg '*' Hello World
MacOS:
osascript -e 'display dialog "Hello World"'
On Linux, you can use a (widely-available) console tool called dialog for much more than a simple message box (like menus, lists with checkboxes, radio buttons, multiple choice dialogs, file list/selection, date/time selection, inputbox, text input, etc.). Usually interactive install scripts use it.
For example, this:
dialog --msgbox 'hello world' 10 30
will give you:
For some cool examples, check in your /usr/share/doc/dialog/examples directory (after installing dialog via your favourite package manager).
A checklist, form, calendar, gauge (progress bar) and a fselect (file picker) follow:
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