Permission Denied for mkdir on Mac

Question

Ok I don't know any linux command and just trying to follow the instructions in here: http://www.bigspaceship.com/2011/02/installing-mongodb-on-mac/

So I opened the terminal and typed

mkdir -p /data/db

but it said Permission Denied.

What should I do?

Answer 1

try this command:

sudo mkdir -p /data/db

sudo executes the command with higher privileges, and will ask for your password before it lets the command be executed.

Answer 2

You do not have permissions to create the directory. As you are trying to run this as your own user, and as I suspect /data/db is hardcoded somewhere, you should be able to do

sudo install -m 0755 -o $USER -d /data/db

This will use super user privileges (sudo) to create two directories (/data, and /data/db) that are owner by your user.

I suggest you do it this way because the rest of the instructions you will still do as your own user.