what is the point of making directories in a Cisco router. I noticed its was kinda like Linux mkdir and all that stuff, but what is the purpose?
Cisco devices have a filesystem, much like other computing devices. I really don't understand your confusion. The file system is used to store boot images an other necessary files.
I noticed its was kinda like Linux mkdir and all that stuff
Did you ever think that Linux was like Cisco IOS, which predates Linux by many years?