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

I don't have csh installed, but

#!/bin/sh
echo Waiting...
sleep 60
echo Change didn't happen

Run that, quickly edit the last line to read

echo Change happened

Output is

Waiting...
/home/dave/tmp/change.sh: 4: Syntax error: Unterminated quoted string

Hrmph.

I guess edits to the shell scripts don't take effect until they're rerun.