Files and folders functions

cd — Changes Nelson current directory.
copyfile — Copy files or folder.
diff_file — diff two files or strings.
dir — Returns file list.
fileparts — Returns the path, filename and extension of a file path.
filesep — Return the file separator character for the current platform.
fullfile — Build full file name from parts.
fullpath — Returns canonical full path.
isdir — Returns true is the input argument is an directory.
isfile — Returns true is the input argument is a file.
isfolder — Returns true is the input argument is an directory.
ls — List folder contents.
mkdir — Creates a new directory.
pathsep — Return the search path separator character for the current platform.
pwd — Returns current directory.
relativepath — Returns the relative path from an actual path to the target path.
rmdir — Removes a directory.
rmfile — Removes a file.
tempdir — Returns the temporary directory path.
tempname — Returns an unique temporary filename.
userdir — Returns the current user's path.