> If you’re writing a script, as the beginning scenario says, that has errors in it, and you expect to have more, do you really want to tell all the commands to

> If you’re writing a script, as the beginning scenario says, that has errors in it, and you expect to have more, do you really want to tell all the commands to power through and delete and overwrite stuff if it encounters an unexpected state? Where are they saying this? These flags are about making sure the script wouldn't error out right away if you run it again, eg how a regular mkdir for a path that already exists would not exit 0 and thus end script execution (given set -e is active, which the article seems to imply). Also it is not so much about purposely writing a script that contains errors, because that would just mean the error is encountered every time, but more about transient errors like running out of disk space, a curl call failing because of network hiccups etc. Everything your script did up until that failure shouldn't prevent a second call from succeeding.