Files

The file management utilities are:

•   (file-exists? path) returns #t if a file (not a directory) with the path path exists, #f otherwise.
•   (delete-file path) deletes the file with pathname path if it exists. Returns #t if a file was deleted successfully, #f otherwise.
•   (rename-file old new) renames the file with pathname old if it exists to the pathname new. Returns #t if a file was renamed successfully, #f otherwise.
•   (file-modify-seconds path) returns the file's last modification date as platform-specific seconds (see also current-seconds and seconds->date in section 3.20).
•   (file-or-directory-permissions path) returns a list containing  'read,  'write, and/or  'execute for the given file or directory path. If no such file or directory exists, the empty list is returned.