This post is tested under masOS High Sierra and Julia v1.6.1.
Suppose you have folder named A with following directory tree:
├── B
│ ├── D
│ │ ├── F
│ │ └── YourScript.jl
│ └── E
└── C
Current directory
pwd() # returns “/Users/USERNAME/Desktop/A/B/D”
Or,
@DIR # returns …