Read-only file system when attempting mkdir /data/db on Mac

Question

I am trying to create a new folder in the main directory

Tried all kinds of examples

sudo mkdir /data/db

sudo mkdir -p /data/db<

Answer 1

Default Paths for the mongodb-community Formula

In addition to installing the MongoDB server and tool binaries, the mongodb-community formula creates:

• a configuration file: /usr/local/etc/mongod.conf
• a log directory path: /usr/local/var/log/mongodb
• a data directory path: /usr/local/var/mongodb

then it worked for me:

mkdir -p usr/local/var/mongodb/data/db