How to simulate pressing enter in a bash script

Question

This is my first bash script. I want to run a script five times, the script is located in the same folder that this script will be located. My problem is that I cannot find how to simulate pressing enter. Since this script needs to load the data first it takes two seconds after running it, then it prompts you to press enter. I want to simulate doing this five times. How can I do the 3 second delay and press enter after? Any other problems with my script?

#!/bin/bash

for i in {1..5}
do
   ./clientScript.py
   #Press enter after a 3 second pause
done

possible duplicate of Simulating ENTER keypress in bash script — Etan Reisner
– Etan Reisner, Commented Mar 9, 2015 at 19:50

Jason Hu · Accepted Answer · 2015-03-09 19:48:08Z

2

this should work:

echo | ./clientScript.py

it simply outputs a \n to the stdin of your python script.

answered Mar 9, 2015 at 19:48

Jason Hu

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2 Comments

that other guy Over a year ago

This doesn't pause and doesn't have to -- the application will just spend a few seconds loading and will read the input when it finds the time.

glenn jackman Over a year ago

To send 3 newlines: { echo; echo; echo; } | program or printf "\n\n\n" | program

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