Question

I am writing some BASH shell script that will continuously check a file to see if the file already contains “Completed!” before proceeding. (Of course, assume the file is being updated and will eventually contain the phrase “Completed!”)

I am not sure how to do this. Thank you for your help.

Answer 1

You can do something like:

while ! grep -q -e 'Completed!' file ; do
  sleep 1 # Or some other number of seconds
done

# Here the file contains completed