We all know that on the terminal command-line you use mkdir to make directories. (Honestly, if ya didn’t, ya should. 😉)

I only recently found out about the -p “flag”/modifier for mkdir with which we can make multiple *sub*-directories at once:

mkdir -p top/middle/bottom

Now I have a folder called “top” which has a folder “middle” inside. “middle”, has its own folder inside called “bottom”¹.

BUT WAIT THERE’S MORE!…

With -p flag you can also make multiple directories at the *same sub-level*. Use a pair of { } and separate the names by ,. This time, say, I’d get “middle” to contain 3 directories inside instead of one - mkdir -p top/middle/{bottom1,bottom2,bottom3}

ABSURD EXAMPLE:

I already knew that you can add “ ” between names to make multiple directories at once at the same level: mkdir dir1 dir2 dir3, but by combining all of this into an abusurd example I would never actually use, I can make a giant (completely made up nonesense) tree structure at once:

mkdir -p newProject/client/{assets/{pdfs,images},dynamic/{configs,media}} otherProject/server/{db{query,cache},app/{model,view}}

Which will make this:

/
├─ newProject/
│  └── client/
│      ├── assets/
│      │   ├── images/
│      │   └── pdfs/
│      └── dynamic/
│          ├── configs/
│          └── media/
└─ otherProject/
   └─ server/
      ├── app/
      │   ├── model/
      │   └── view/
      ├── dbcache/
      └── dbquery/

So, a random possibly useful thing to know…
Cheers!

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