Edit shell script while it's running

Question

Can you edit a shell script while it\'s running and have the changes affect the running script?

I\'m curious about the specific case of a csh script I have that batc

Answer 1

An interesting side note - if you are running a Python script it does not change. (This is probably blatantly obvious to anyone who understands how shell runs Python scripts, but thought it might be a useful reminder for someone looking for this functionality.)

I created:

#!/usr/bin/env python3
import time
print('Starts')
time.sleep(10)
print('Finishes unchanged')

Then in another shell, while this is sleeping, edit the last line. When this completes it displays the unaltered line, presumably because it is running a .pyc? Same happens on Ubuntu and macOS.