- Fatal – Replace functions with equivalents which succeed or die
- Fcntl – various flag constants and helper functions from C's fcntl.h
- File::Basename – Parse file paths into directory, filename and suffix.
- File::Compare – Compare files or filehandles
- File::Copy – Copy files or filehandles
- File::DosGlob – DOS like globbing and then some
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File::FcntlLock – File locking with fcntl(2) This text also documents the following sub-packages:
File::FcntlLock::Inline File::FcntlLock::Pure File::FcntlLock::XS - File::Fetch – A generic file fetching mechanism
- File::Find – Traverse a directory tree.
- File::Glob – Perl extension for BSD glob routine
- File::GlobMapper – Extend File Glob to Allow Input and Output Files
- File::Path – Create or remove directory trees
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File::Spec – portably perform operations on file names
File::Spec::AmigaOS File::Spec::Cygwin File::Spec::Epoc File::Spec::Functions File::Spec::Mac File::Spec::OS2 File::Spec::Unix File::Spec::VMS File::Spec::Win32 - File::Temp – return name and handle of a temporary file safely
- File::stat – by-name interface to Perl's built-in stat() functions
- FileCache – keep more files open than the system permits
- FileHandle – supply object methods for filehandles
- Filter::Simple – Simplified source filtering
- Filter::Util::Call – Perl Source Filter Utility Module
- FindBin – Locate directory of original Perl script