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brew install tree

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yum install tree  
## CentOS/RHEL 8.x and Fedora user try the dnf command ##  
dnf install tree

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sudo apt-get install tree

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tree .

➜  new-poetry-repository tree
.
├── README.md
├── new_poetry_repository
│   └── __init__.py
├── pyproject.toml
└── tests
    └── __init__.py