copy_dir                Copy the contents of a directory
create_dirs             Create or remove directories
cygwinify_path          Make a path suitable for cygwin
decompose_path          Split a path into its components
get_drive               On Windows, return the drive of the path
get_libraries           Get the libraries on your machine
is_windows_drive        Is the path a Windows drive?
os_path                 The OS path
parent_dir              Get the parent dir
pathological            pathological: utilities for paths, files and
                        directories.
r_home                  The R home directory
r_profile               Get the location of the R profile
split_path              Split a path into directory components
standardize_path        Standardize paths
sys_which               Find paths to executables
system_file             Find a file in a package
temp_dir                Create a temp file/dir
