I didn't mention Rails in the title because most of the commands aren't Rails specific.

It's not. It's a poor title. Nothing there is Rails specific.

Sorry about that! I didn't submit the link otherwise I would have mentioned it.

Though...the only way it's really "rails focused" is that the commands are collected over time and sourced from my fellow rails developer/sysadmins. A lot of these are basic/general linux commands.