When things go wrong badly enough that your server is down, but you can still access the disks, you may find yourself faced with a number of complex recovery tasks.
One of those is the need to discover the structure of a particular table or set tables. Perhaps this is needed for an emergency recovery, a redeployment, or setup for a forensic investigation. Whatever the case, without a running MySQL server it is not possible to know the structure of a table unless you keep meticulous notes and/or use some form of high availability (redundancy).
Fortunately, there is a utility for situations like this. The mysqlfrm utility can be used to discover the structure of a table.