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File::Iterator wraps a simple iteration interface around the files in a directory or directory tree. It builds a list of filenames, and maintains a cursor that points to one filename in the list. The user can work through the filenames sequentially by repeatedly doing stuff with the next filename that the cursor points to until their are no filenames left.

This module is to guess file type from its contents like file(1) command.

File::Attributes lets you assign attributes to files (and read them, and list them, and delete them).

This module provides functions for handling unicode byte order marks, which are to be found at the beginning of some files and streams. The intention of File::BOM is for files with BOMs to be readable as seamlessly as possible, regardless of the encoding used.

This module can be used to find directories and files as specified by the XDG Base Directory Specification. It takes care of defaults and uses File::Spec to make the output platform specific. This module forked from File::MimeInfo. For this module the XDG basedir specification 0.6 was used.

This module provides a simple interface for monitoring one or more files or directories and reporting any changes that are made to them.

File::NCopy::copy copies files to directories, or a single file to another file. You can also use a reference to a file handle if you wish when doing a file to file copy. The functionality is very similar to cp. If the argument is a directory to directory copy and the recursive flag is set then it is done recursively like cp -R. In fact it behaves like cp on Unix for the most part. If called in array context, an array of successful copies is returned, otherwise the number of successful copies is returned. If passed a file handle, it's difficult to make sure the file we are copying isn't the same that we are copying to, since by opening the file in write mode it gets pooched. To avoid this use file names instead, if at all possible, especially for the to file. If passed a file handle, it is not closed when copy returns, files opened by copy are closed.

File::NFSLock - perl module to do NFS (or not) locking. The module is based of concept of hard linking of files being atomic across NFS. This concept was mentioned in Mail::Box::Locker (which was originally presented in Mail::Folder::Maildir). Some routine flow is taken from there -- particularly the idea of creating a random local file, hard linking a common file to the local file, and then checking the nlink status. Some ideologies were not complete (uncache mechanism, shared locking) and some coding was even incorrect (wrong stat index). File::NFSLock was written to be light, generic, and fast.

File::Binary is a perl module that provides an interface to modify and read binary files.

File::PathConvert provides functions to convert between absolute and relative paths, and from logical paths to physical paths on a variety of filesystems, including the URL 'filesystem'. For new programs, it is probably better to use File::Spec and Cwd modules, if you can help it.