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Index: F

@F array : Global Special Arrays
command (debugger) : Debugger Commands
-f file test operator : Named Unary and File Test Operators
-F switch, perl : Switches
fallback operator : Fallback
false value : (see Boolean)
FAQ on Perl : Frequently Asked Questions List
fastcwd() routine : Cwd - Get Pathname of Current Working Directory
fcntl function : fcntl
Fcntl module : Fcntl - Load the C fcntl.h Defines
fd() method : Locking databases
fdopen() : FileHandle - Supply Object Methods for Filehandles
FETCH method
- Tying Scalars
- Tying Arrays
- Tying Hashes
FIFOs : Named pipes
file descriptors
- fileno
- select (ready file descriptors)
file test operator : Named Unary and File Test Operators
__FILE__ token : Other literal tokens
File::Basename module : File::Basename - Parse File Specifications
File::CheckTree module : File::CheckTree - Run Many Tests on a Collection of Files
File::Copy module : File::Copy - Copy Files or Filehandles
File::Find module : File::Find - Traverse a File Tree
File::Path module : File::Path - Create or Remove a Series of Directories
FileCache module : FileCache - Keep More Files Open Than the System Permits
filecheck() : ExtUtils::Manifest - Utilities to Write and Check a MANIFEST File
FileHandle constructor, open function with : open
FileHandle module : FileHandle - Supply Object Methods for Filehandles
filehandles : Filehandles
- angle operator and : Line input (angle) operator
- copying : File::Copy - Copy Files or Filehandles
- creating : Filehandles
- ending with _TOP
- - Formats
  - Per-Filehandle Special Variables
- global : Global Special Filehandles
- localizing : Typeglobs and Filehandles
- names for : Variables
- object methods for : FileHandle - Supply Object Methods for Filehandles
- open function : open
- passing by reference : Passing References
- positioning file pointer for : seek
- reading bytes of data from : read
- references to : Filehandle Referencers
- saving/restoring : SelectSaver - Save and Restore Selected Filehandle
- selecting for output : select (output filehandle)
- special variables for : Per-Filehandle Special Variables
- typeglobs for : Typeglobs and Filehandles
filename globbing operator : (see glob operator)
filenames : Other literal tokens
- changing name of : rename
- expansions of : glob
- getting from symbolic links : readlink
- %INC hash of : Global Special Arrays
- linking symbolically : symlink
- linking with hard links : link
fileno function : fileno
fileparse() : File::Basename - Parse File Specifications
fileparse_set_fstype() : File::Basename - Parse File Specifications
files
- access and modification times
- - stat
  - utime
- ages for : Named Unary and File Test Operators
- changing name of : rename
- closing : close
- copying : File::Copy - Copy Files or Filehandles
- core : Switches
- deleting : unlink
- end of file : eof
- getting statistics of : stat
- names of : (see filenames)
- open function : open
- opening via low-level system call : sysopen
- ownership of : chown
- permissions
- - (see permissions, file)
  - sysopen
  - umask
- read in binary mode : binmode
- reading backwards : Examples
- reading via low-level system call : sysread
- returning current position for : tell
- symbolically linking : symlink
- test operators : File Test Operators
- testing : File::CheckTree - Run Many Tests on a Collection of Files
- text/binary distinction : open
- truncating : truncate
- writing via low-level system call : syswrite
filters, source code
- List Processing
- Source filters
find() : File::Find - Traverse a File Tree
find2perl program
- find2perl
- Translation from Awk and Sed
first occurrence match : (see m?? (match) operator)
FIRSTKEY method : Tying Hashes
flags : (see switches, Perl command-line)
floating-point numbers : Math::BigFloat - Arbitrary-Length, Floating-Point Math Package
flock function : flock
flush
- Pattern-Matching Operators
- FileHandle - Supply Object Methods for Filehandles
folders : (see directories)
footers : Footers
for loops
- The for statement
- For loops
foreach loops
- The foreach statement
- Foreach loops
- Previous Perl Traps
- Time Efficiency
fork function : fork
fork system call : Anonymous pipes
forks : open
form feed : Global Special Variables
format
- Formats
- Per-Filehandle Special Variables
- declaration : format
- names : format
- for strings, C-style : sprintf
format output accumulator : (see $ variables, $^A)
$FORMAT_LINE_BREAK_CHARACTERS : (see $ variables, $: variable)
$FORMAT_LINEFEED : (see $ variables, $^L variable)
$FORMAT_LINES_LEFT : (see $ variables, $- variable)
$FORMAT_LINES_PER_PAGE : (see $ variables, $= variable)
$FORMAT_NAME : (see $ variables, $~ variable)
$FORMAT_PAGE_NUMBER : (see $ variables, $% variable)
$FORMAT_TOP_NAME : (see $ variables, $^ variable)
formline function : formline
FTP (File Transfer Protocol)
- getting Perl via : Using Anonymous FTP
- obtaining code examples via : Examples
fullcheck() : ExtUtils::Manifest - Utilities to Write and Check a MANIFEST File
function calls : Terms and List Operators (Leftward)
functions
- (see also subroutines)
- Verbs
- Subroutines
- Functions
- autoloading
- - Autoloading
  - Class Is Simply a Package
- Berkeley DB API : Using the Berkeley DB interface directly
- C library : Functions
- delayed loading of : (see AutoLoader module)
- loading on demand : (see SelfLoader module)
- named unary operators : Named Unary and File Test Operators
- names for : Developing with Style
- overriding : Overriding Built-in Functions
- POSIX module : Functions

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