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<html><head><title>Index: F</title></head><body bgcolor="#FFFFFF" text="#000000"><!-- START OF BODY --><!-- TOP BANNER --><p><img src="../gifs/smbanns.gif" usemap="#banner-map" border=0 alt="Book Home" ></p><map name="banner-map"><AREA SHAPE="RECT" COORDS="0,0,466,71" HREF="../index.htm" ALT="Programming Perl"><AREA SHAPE="RECT" COORDS="467,0,514,18" HREF="../jobjects/fsearch.htm" ALT="Search this book"></map><!-- TOP INDEX LINKS --><p><a href="idx_0.htm">Symbols</a>| <a href="idx_a.htm">A</a>| <a href="idx_b.htm">B</a>| <a href="idx_c.htm">C</a>| <a href="idx_d.htm">D</a>| <a href="idx_e.htm">E</a>| <a href="idx_f.htm">F</a>| <a href="idx_g.htm">G</a>| <a href="idx_h.htm">H</a>| <a href="idx_i.htm">I</a>| <a href="idx_j.htm">J</a>| <a href="idx_k.htm">K</a>| <a href="idx_l.htm">L</a>| <a href="idx_m.htm">M</a>| <a href="idx_n.htm">N</a>| <a href="idx_o.htm">O</a>| <a href="idx_p.htm">P</a>| <a href="idx_q.htm">Q</a>| <a href="idx_r.htm">R</a>| <a href="idx_s.htm">S</a>| <a href="idx_t.htm">T</a>| <a href="idx_u.htm">U</a>| <a href="idx_v.htm">V</a>| <a href="idx_w.htm">W</a>| <a href="idx_x.htm">X</a>| <a href="idx_y.htm">Y</a>| <a href="idx_z.htm">Z</a></FONT><!-- INDEX SECTION BODY --><H1>Index: F</H1><DL><a name="$^F-variable"><dt>$^F variable: <a href="../ch29_02.htm#INDEX-4772">29.2.38. fileno</a></dt><dd><dl> <dt><a href="../ch29_02.htm#INDEX-4773">29.2.38. fileno</a></dt></dl></dd><a name="%FIELDS-hash"><dt>%FIELDS hash: <a href="../ch28_02.htm#INDEX-4464">28.2. Special Variables in Alphabetical Order</a></dt><a name="@F-array"><dt>@F array: <a href="../ch28_02.htm#INDEX-4460">28.2. Special Variables in Alphabetical Order</a></dt><a name="-F-pattern-to-split-oncommand-line-switch"><dt>-F (pattern to split on)command-line switch: <a href="../ch19_01.htm#INDEX-3379">19.1.3. Switches</a></dt><a name="failed-matches-searching-past-position-of"><dt>failed matches, searching past position of: <a href="../ch05_06.htm#INDEX-1630">5.6.4. Progressive Matching</a></dt><a name="fallback-overloading-key"><dt>fallback overloading key: <a href="../ch13_05.htm#INDEX-2635">13.5. When an Overload Handler Is Missing (nomethod and fallback)</a></dt><a name="false-values"><dt>false values: <a href="../ch01_02.htm#INDEX-68">1.2.1.1. Singularities</a></dt><dd><dl></dl></dd><a name="FAQ-Perl-online"><dt>FAQ, Perl online: <a href="../ch24_01.htm#INDEX-4102">24.1. Common Goofs for Novices</a></dt><a name="Fast-CGI-protocol-using"><dt>Fast CGI protocol, using: <a href="../ch32_01.htm#INDEX-5587">32.1.9. World Wide Web</a></dt><a name="fatal-errors"><dd><dl></dl></dd><a name="Fatal-module"><dt>Fatal module: <a href="../ch32_01.htm#INDEX-5642">32.1.13. Perl Language Extensions and Internals</a></dt><a name="fcntl-function"><dt>fcntl function: <a href="../ch29_02.htm#INDEX-4762">29.2.37. fcntl</a></dt><dd><dl> <a name="security-risks-associated-with"> <dt>security risks associated with: <a href="../ch23_02.htm#INDEX-4049">23.2.3. Temporary Files</a></dt></dl></dd><a name="Fcntl-module"><dt>Fcntl module: <a href="../ch32_01.htm#INDEX-5531">32.1.7. Operating System Interfaces</a></dt><a name="fcntl-syscall"><dt>fcntl syscall, <a name="filehandle-close-on-exec-flag-manipulating">filehandle close-on exec flag, manipulating: <a href="../ch16_02.htm#INDEX-2978">16.2.2. Passing Filehandles </a></dt><a name="field-declarations-with-use-fields-pragma"><dt>field declarations with use fields pragma: <a href="../ch12_07.htm#INDEX-2529">12.7.1. Field Declarations with use fields</a></dt><a name="field-separator-specifying-different"><dt>field separator, specifying different: <a href="../ch19_01.htm#INDEX-3381">19.1.3. Switches</a></dt><dd><dl></dl></dd><a name="fields-module"><dt>fields module: <a href="../ch32_01.htm#INDEX-5644">32.1.13. Perl Language Extensions and Internals</a></dt><a name="FIFOs"><dt>FIFOs: <a href="../ch16_03.htm#INDEX-3036">16.3.4. Named Pipes</a></dt><dd><dl></dl></dd><a name="__FILE_"><dt>__FILE__</dt><dd><dl> <dt><a href="../ch24_05.htm#INDEX-4292">24.5.2. Generating Perl in Other Languages</a></dt><dt><a href="../ch02_06.htm#INDEX-630">2.6.8. Other Literal Tokens</a></dt></dd></dl><a name="file-conversions-Perl-modules-for"><dt>file conversions, Perl modules for: <a href="../ch22_01.htm#INDEX-3879">22.1. The CPAN modules Directory</a></dt><a name="file-descriptors"><dt>file descriptors: <a href="../ch29_02.htm#INDEX-4766">29.2.38. fileno</a></dt><dd><dl> <dt><a href="../ch29_02.htm#INDEX-5198">29.2.141. select (ready file descriptors)</a></dt> <a name="filehandles-passing-with"> <dt>filehandles, passing with: <a href="../ch16_02.htm#INDEX-2976">16.2.2. Passing Filehandles </a></dt> <a name="passing-through-environment-variable-or-command-line-option"> <dt>passing through environment variable or command-line option: <a href="../ch16_02.htm#INDEX-2979">16.2.2. Passing Filehandles </a></dt> <a name="returning-for-tied-filehandles"> <dt>returning for tied filehandles: <a href="../ch14_04.htm#INDEX-">14.4.1. Filehandle-Tying Methods</a></dt></dl></dd><a name="file-test-operators"><dt>file test operators: <a href="../ch03_10.htm#INDEX-890">3.10. Named Unary and File Test Operators</a></dt><dd><dl> <a name="-p-checking-for-FIFO"> <dt>-p, checking for FIFO: <a href="../ch16_03.htm#INDEX-3042">16.3.4. Named Pipes</a></dt></dl></dd><a name="file-tests"><dd><dl> <a name="race-conditions-with"> <dt>race conditions with: <a href="../ch23_02.htm#INDEX-4034">23.2.2. Handling Race Conditions</a></dt></dl></dd><a name="File::Basename-module"><dt>File::Basename module: <a href="../ch25_03.htm#INDEX-4337">25.3. Files and Filesystems</a></dt><dd><dl> <dt><a href="../ch32_01.htm#INDEX-5464">32.1.4. Filenames, Filesystems, and File Locking</a></dt></dl></dd><a name="File::CheckTree-module"><dt>File::CheckTree module: <a href="../ch32_01.htm#INDEX-5466">32.1.4. Filenames, Filesystems, and File Locking</a></dt><a name="File::chmod-module"><dt>File::chmod module: <a href="../ch29_02.htm#INDEX-4664">29.2.10. chmod</a></dt><a name="File::Compare-module"><dt>File::Compare module: <a href="../ch32_01.htm#INDEX-5468">32.1.4. Filenames, Filesystems, and File Locking</a></dt><a name="File::Copy-module"><dt>File::Copy module: <a href="../ch32_01.htm#INDEX-5470">32.1.4. Filenames, Filesystems, and File Locking</a></dt><a name="File::DosGlob-module"><dt>File::DosGlob module: <a href="../ch32_01.htm#INDEX-5472">32.1.4. Filenames, Filesystems, and File Locking</a></dt><a name="File::Find-module"><dt>File::Find module: <a href="../ch32_01.htm#INDEX-5475">32.1.4. Filenames, Filesystems, and File Locking</a></dt><a name="File::Glob-module"><dt>File::Glob module: <a href="../ch32_01.htm#INDEX-5478">32.1.4. Filenames, Filesystems, and File Locking</a></dt><a name="fileglob-operator"><dt>fileglob operator: <a href="../ch02_11.htm#INDEX-757">2.11.3. Filename Globbing Operator</a></dt><a name="FileHandle-module"><dt>FileHandle module: <a href="../ch07_01.htm#INDEX-1922">7.1. Format Variables</a></dt><dd><dl> <dt><a href="../ch07_02.htm#INDEX-1942">7.2.1. Accessing Formatting Internals</a></dt> <dt><a href="../ch32_01.htm#INDEX-5503">32.1.5. Filehandle, Directory Handle, and Stream I/O Utilities</a></dt></dl></dd><a name="filehandle-tying"><dt>filehandle-tying: <a href="../ch14_04.htm#INDEX-2740">14.4.1. Filehandle-Tying Methods</a></dt><a name="filehandles"><dt>filehandles: <a href="../ch01_04.htm#INDEX-169">1.4. Filehandles</a></dt><dd><dl> <a name="-anonymous"> <dt> anonymous: <a href="../ch08_02.htm#INDEX-2001">8.2.4. Handle References</a></dt> <a name="angle-operator-and"> <dt>angle operator and: <a href="../ch02_11.htm#INDEX-747">2.11.2. Line Input (Angle) Operator</a></dt> <a name="creating"> <dt>creating: <a href="../ch01_04.htm#INDEX-174">1.4. Filehandles</a></dt> <a name="duplicating-reasons-for"> <dt>duplicating, reasons for: <a href="../ch29_02.htm#INDEX-5066">29.2.104. open</a></dt> <a name="ending-with-_TOP"> <dt>ending with _TOP: <a href="../ch07_01.htm#INDEX-1907">7. Formats</a></dt><dd><dl> <dt><a href="../ch28_02.htm#INDEX-4487">28.2. Special Variables in Alphabetical Order</a></dt> </dl></dd> <a name="file-locks-on"> <dt>file locks on: <a href="../ch16_02.htm#INDEX-2962">16.2.1. File Locking</a></dt> <a name="formats-associated-with-default-names-of"> <dt>formats associated with, default names of: <a href="../ch07_01.htm#INDEX-1889">7. Formats</a></dt> <a name="functions-dealing-with"> <dt>functions dealing with: <a href="../ch29_01.htm#INDEX-">29.1. Perl Functions by Category</a></dt> <a name="implicit-referencing-in"> <dt>implicit referencing in: <a href="../ch08_01.htm#INDEX-1964">8.1. What Is a Reference?</a></dt> <a name="indirect"> <a name="local-creating"> <dt>local, creating: <a href="../ch29_02.htm#INDEX-4984">29.2.87. local</a></dt> <a name="localizing"> <dt>localizing: <a href="../ch02_10.htm#INDEX-730">2.10. Typeglobs and Filehandles</a></dt> <a name="names-for"> <dt>names for: <a href="../ch02_05.htm#INDEX-475">2.5. Names</a></dt> <a name="object-methods-for-using"> <dt>object methods for, using: <a href="../ch32_01.htm#INDEX-5508">32.1.5. Filehandle, Directory Handle, and Stream I/O Utilities</a></dt> <a name="open-function"> <dt>open function: <a href="../ch29_02.htm#INDEX-5041">29.2.104. open</a></dt> <a name="passing"> <dt>passing: <a href="../ch06_04.htm#INDEX-1861">6.4. Prototypes</a></dt> <a name="passing-in-IPC"> <dt>passing in IPC: <a href="../ch16_02.htm#INDEX-2971">16.2.2. Passing Filehandles </a></dt><dd><dl> <a name="through-standard-filehandles"> <dt>through standard filehandles: <a href="../ch16_02.htm#INDEX-2975">16.2.2. Passing Filehandles </a></dt> </dl></dd> <a name="piped-explicitly-closing"> <dt>piped, explicitly closing: <a href="../ch29_02.htm#INDEX-5057">29.2.104. open</a></dt> <a name="positioning-file-pointer-for"> <dt>positioning file pointer for: <a href="../ch29_02.htm#INDEX-5186">29.2.138. seek</a></dt> <a name="reading-bytes-of-data-from"> <dt>reading bytes of data from: <a href="../ch29_02.htm#INDEX-5140">29.2.120. read</a></dt> <a name="references-to"> <dt>references to: <a href="../ch08_02.htm#INDEX-1996">8.2.4. Handle References</a></dt> <a name="selecting-for-output"> <dt>selecting for output: <a href="../ch29_02.htm#INDEX-5191">29.2.140. select (output filehandle)</a></dt> <a name="SelectSaver-module"> <dt>SelectSaver module: <a href="../ch32_01.htm#INDEX-5519">32.1.5. Filehandle, Directory Handle, and Stream I/O Utilities</a></dt> <a name="syslog-tying-output-to"> <dt>syslog tying output to: <a href="../ch14_06.htm#INDEX-2784">14.6. Tie Modules on CPAN</a></dt> <a name="tying"> <dt>tying: <a href="../ch14_04.htm#INDEX-2734">14.4. Tying Filehandles</a></dt><dd><dl> <a name="creative-filehandles"> <dt>creative filehandles: <a href="../ch14_04.htm#INDEX-2745">14.4.2. Creative Filehandles</a></dt> <a name="methods-for"> <dt>methods for: <a href="../ch14_04.htm#INDEX-2741">14.4.1. Filehandle-Tying Methods</a></dt> </dl></dd> <a name="typeglobs-for"> <dt>typeglobs for: <a href="../ch02_10.htm#INDEX-728">2.10. Typeglobs and Filehandles</a></dt> <a name="use-instead-of-filenames-security-benefits-of"> <dt>use instead of filenames, security benefits of: <a href="../ch23_02.htm#INDEX-4037">23.2.2. Handling Race Conditions</a></dt></dl></dd><a name="filename-globbing-operator"><dt>filename globbing operator (see <a href="idx_g.htm#glob-operator">glob operator</a>)</dt>⌨️ 快捷键说明
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