I'm the author of this post, it was a joke. I said "For those who have no idea what they're doing 90% of the time when they are in bash" very sarcastically, but obviously this wasn't conveyed very well, sorry.

edit: I know the defense "it was a joke" is very overplayed, but really, somewhere in between the graphs with rainbows and explosions, this post was intended to be humourous. :)