By not testing it properly before running it over the whole file system resulting in a few hours of extra work cleaning up the mess I made.

Very true. I used to do magic with xargs when working as a sysadm. Also a good way to mess up on a grand scale. Ask me how I know.

Not American, so forgive me if I don’t understand the full context, but why is this more upsetting then when Trump pardoned a relative or when Clinton did it?

Xitter. Pronounced just the way you think.

OpenStreetmap as an alternative to the closed source maps.

OrganicMaps or OsmAnd to navigate and StreetComplete or EveryDoor to improve it.