Exists returns whether or not a file or path exists.

Move moves a file from a source path to a destination path This must be used across the codebase for compatibility with Docker volumes and Golang (fixes Invalid cross-device link when using os.Rename).

Write writes selected data to a file or returns an error if it fails.

WriteAsCSV takes a table of records and writes it as CSV.

Writer creates a writer to a file or returns an error if it fails.

DefaultPermissionOctal is the default file and folder permission octal used throughout GCT.