| So now I want to update my Quick Start troubleshooting
| section and tell people how to prevent that.
| What is the best way to do this (i.e., the least
| resource intensive)?
As Ruud has posted, the best way is to save up all the information to log and
echo it at once from a TRAP statement. It isn't foolproof, but it's far less
vulnerable to collisions, and the risk of still having one is less trouble
than using a global lockfile.
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