Send "enter key" to python script from bash

Question

I am trying to automate my ubuntu setup with a bash script and got the following problem:

I want the script to automatically send a enter keystroke, when running umake ide eclipse (this installs eclipse ide from the terminal).

This is the standard output, when running from the terminal without a script:

$ umake ide eclipse Choose installation path: /home/gn4i/.local/share/umake/ide/eclipse <need to press enter> Downloading and installing requirements 

Normally I would do this with echo | umake ide eclipse, but I always get the following error

 $ echo | umake ide eclipse Choose installation path: Choose installation path: ERROR: Unhandled exception Traceback (most recent call last): File "/usr/lib/python3/dist-packages/umake/tools.py", line 158, in wrapper function(*args, **kwargs) File "/usr/lib/python3/dist-packages/umake/ui/__init__.py", line 42, in display cls.currentUI._display(contentType) File "/usr/lib/python3/dist-packages/umake/ui/cli/__init__.py", line 61, in _display contentType.run_callback(result=rlinput(contentType.content, contentType.default_input)) File "/usr/lib/python3/dist-packages/umake/ui/cli/__init__.py", line 41, in rlinput return input(prompt + " ") EOFError: EOF when reading a line 

How can I automate this installation?

Answer 1

I managed to solved it with a screen approach. This runs in the background and I don't see the progress, but this is ok for me

screen -d -m -S umake-eclipse screen -S umake-eclipse -p 0 -X stuff "umake ide eclipse\n\n" 

Answer 2

Using a very simplistic expect script:

spawn umake ide eclipse expect "Choose installation path:" { sleep 1; send "\r" } 

Running it:

$ expect -f script.expect 

Answer 3

@Kusalananda's answer won't work in practice as the execution of the umake command stops after the send command.

Here's an extended, working solution:

#!/usr/bin/expect spawn umake ide eclipse expect "Choose installation path:" { send "\r" } interact