Index F

[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] [Y] [Z]

factorial( ) 
failure, returning from subroutines 
false values 
fcntl( ), return values 
FETCH( ) 
fetching URLs from Perl scripts 
<FH> line input operator 
FIFOs (named pipes) 
file access  2nd  [See also directories file contents][See also directories file contents]
    access modes  2nd 
    copying and moving files 
    editing files  [See file contents]
    filehandles  2nd 
        caching open 
        copying 
        printing to multiple 
        reading a line from, without blocking 
        reading from multiple 
    filtering filename input 
        command-line options 
    flushing output 
    locking files 
        netlock program 
        region-specific locks 
    non-blocking I/O 
    opening and closing file descriptors 
    processing all files in directories 
        recursively 
    storing files in program text 
    timestamps 
    unread bytes, determining number of 
file contents  2nd  [See also directories; file access]
    adding records to wtmp file 
    comparing two files 
    configuration files, reading 
    continually growing files, reading 
    converting Microsoft files to Unicode 
    counting lines, paragraphs, and records 
    extracting single line 
    fixed-length records 
        reading 
    I/O layers 
    modifying
        with -i switch 
        with temporary files 
        without temporary files 
    processing all words in 
    processing binary files 
    random access
        input/output 
        updating 
    random lines from, selecting 
    randomizing line order 
    reading
        backwards 
        lines with continuation characters 
        null-terminated strings from binary files 
    reading and writing hash records to file 
    reading and writing Unicode from filehandles 
    setting default I/O layers 
    tctee program 
    testing for trustworthiness 
    treating
        files as arrays 
        strings as files 
    variable-length text fields 
    viewing lastlog file information 
file descriptors, opening and closing 
file extensions 
__FILE__ symbol 
file test operators 
File::Basename module 
File::chmod module 
File::Compare module 
File::Copy module  2nd 
File::Find module 
    removing directories recursively 
File::Glob module 
File::KGlob module 
File::LockDir module 
File::NFSLock module 
File::Path module 
File::stat module  2nd 
File::Temp module 
FileCache module 
filehandles 
    autovivified 
    caching 
    comparing 
    copying 
    local 
    non-blocking I/O 
    passing  2nd 
    printing to multiple simultaneously 
    reading
        a line from, without blocking 
        from many 
    reading and writing Unicode from 
    reporting filenames in errors 
    seek offset 
    standard 
    storing in variables 
    tied 
    using filename as 
filenames
    expanding tildes in 
    filtering as input 
        command-line options 
    globbing 
    multiple, for same file 
    parsing 
    renaming 
    reporting in errors 
    sorting  2nd 
    unusual, opening files with 
    using as filehandle 
fileparse( ) 
files
    binary 
        reading null-terminated strings 
    C header, translating with h2ph 
    comparing file contents 
    configuration, reading 
    creating temporary 
    deleting 
        last line of 
    downloading, resuming HTTP GET 
    locking 
        advisory locking 
        netlock program 
    Microsoft, converting to Unicode 
    opening 
    processing all in directories 
    random-access, updating 
    RSS, reading and writing 
    storing in program text 
    treating
        as arrays 
        strings as 
    with unusual filenames, opening 
    uploaded, receiving with mod_perl handler 
    XML, larger than available memory, processing 
filesystem  [See directories]
filtering
    filenames as input 
        command-line options 
    output 
    XML 
FindBin module 
finddepth( ) 
finding
    fresh hyperlinks 
    most common anything 
    patterns  [See regular expressions]
    text and elements in XML documents 
    versions and descriptions of modules 
findnodes( ) vs. getElementsByTagName( ) 
FIONREAD call 
firewalls, fetching web pages through 
fixed-length records 
    flat-file index program 
    reading 
FixNum class 
fixstyle program 
flat file index program 
flattened lists 
floating-point numbers 
    comparing 
    rounding 
flock( ) 
    compared to SysV lockf( ) 
floor( ) 
flushing output 
fmt program 
fnctl( ), locking files 
folded_demo program 
fonts, Unicode, support for 
foodfind program 
=for escape pod directive 
ForceArray option 
foreach loop 
    printing to multiple filehandles 
    renaming files 
    traversing hashes 
fork( )  2nd  [See also processes]
    avoiding zombie processes 
    closing sockets after 
    forking servers 
    non-forking servers 
    preforking servers 
    shell escapes 
format_string( ) 
forms, HTML 
    saving and emailing 
    sticky widgets 
    submitting 
forward slash (/)
    /e substitution modifier  2nd 
    /g pattern-matching modifier 
        finding Nth matches 
        where last pattern ended 
    /i pattern-matching modifier 
    /m pattern-matching modifier 
        multiple lines 
    /o pattern-matching modifier 
    /s pattern-matching modifier 
        multiple lines 
    /x pattern modifier 
        comments in regular expressions 
    root directory 
Frame widget, Tk 
FTP clients 
full-screen mode 
functions
    interpolating within strings 
    vs. methods 
    private for variables 
    references to 
    types of 
fuzzy matching 
fwdport program