When administering a Linux/Unix computer, one of the most common (and important) commands is how to list the contents of a directory. On Linux/Unix, the following command will display all files in a directory, even if they are hidden.
The command above has some flags set (otherwise known as parameters), which is the "-Flash" portion of the command. I prefer this set of flags, and in that order since it is easy to remember the word "Flash" versus random orders of each flash like "lhaFs". These set of flags I like show the list of files vertically with many attributes shown and colorful visual indicators.