Configuration git and listing the used configuration

git-config.sh

# Add repository configuration
git config [key] [value]
# Add global configuration
git config --global [key] [value]
# Add system configuration
git config --system [key] [value]

# Show repository configuration for key
git config [key]
# Show global configuration for key
git config --global [key]
# Show system configuration for key
git config --system [key]

# List all repository configurations
git config --list
# List all global configurations
git config --global --list
# List all system configurations
git config --system --list