Files and folders functions

Description

files, folders and paths 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.