This seems like the correct solution to me. If I run a 4GB script (eg, a self-extracting script with a zip embedded, like another comment mentioned), I don't wa

This seems like the correct solution to me. If I run a 4GB script (eg, a self-extracting script with a zip embedded, like another comment mentioned), I don't want to oom myself. Locking during execution or exiting with an appropriate error code seems like much more desirable behavior.