mongod

TLDR

Specify the storage directory (default: /data/db on Linux and MacOS, C:\data\db on Windows)

$ mongod --dbpath [path/to/directory]

Specify a config file

$ mongod --config [path/to/file]

Specify the port to listen on (default: 27017)

$ mongod --port [port]

Specify the database profiling level. 0 is off, 1 is only slow operations, 2 is all (default: 0)

$ mongod --profile [0|1|2]