创建一个新文件 ~/.gitignore ，并将以下内容添加进去，这样全部 git 仓库将会忽略以下内容所提及的文件
# Folder view configuration files
.DS_Store
Desktop.ini
# Thumbnail cache files
._*
Thumbs.db
# Files that might appear on external disks
.Spotlight-V100
.Trashes
# Compiled Python files
*.pyc
# Compiled C++ files
*.out
# Application specific files
venv
node_modules
.sass-cache