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<html><head><title>Index: G (CGI Programming with Perl)</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" ></a></p><map name="banner-map"><area alt="CGI Programming with Perl" href="../index.htm" coords="0,0,466,65" shape="rect" /><area alt="Search this book" href="../jobjects/fsearch.htm" coords="467,0,514,18" shape="rect" /></map></map><!-- TOP INDEX LINKS --><p><font size="-1"><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: G</H1><DL><a name="gateway-time-out-status-code"><dt>gateway time out status code: <a href="../ch03_03.htm#INDEX-656">3.3.1.3. Specifying status codes</a></dt><a name="gcc-compiler-obtaining"><dt>gcc compiler, obtaining: <a href="../appb_01.htm#INDEX-3348">B.1.1. Installing Modules</a></dt><a name="GD-modules"><dt>GD modules: <a href="../ch13_03.htm#INDEX-2515">13.3. Generating PNGs with GD</a></dt><dd><dl> <a name="gd-library-downloading"> <dt>gd library, downloading: <a href="../ch13_03.htm#INDEX-2527">13.3.2. Using GD</a></dt> <a name="GD-:-:Graph-modules"> <dt>GD::Graph modules: <a href="../ch13_04.htm#INDEX-2549">13.4.2. GD::Graph</a></dt><dd><dl> <dt><a href="../ch13_04.htm#INDEX-2554">13.4.2. GD::Graph</a></dt> </dl></dd> <a name="GD-:-:Image-class"> <dt>GD::Image class: <a href="../ch13_03.htm#INDEX-2534">13.3.2. Using GD</a></dt> <a name="GD-:-:Polygon-class"> <dt>GD::Polygon class: <a href="../ch13_03.htm#INDEX-2535">13.3.2. Using GD</a></dt> <a name="GD-:-:Text"> <dt>GD::Text: <a href="../ch13_04.htm#INDEX-2540">13.4.1. GD::Text</a></dt> <a name="GD-:-:Text-:-:Align"> <dt>GD::Text::Align: <a href="../ch13_04.htm#INDEX-2542">13.4.1. GD::Text</a></dt><dd><dl> <dt><a href="../ch13_04.htm#INDEX-2545">13.4.1.1. GD::Text::Align</a></dt> </dl></dd> <a name="GD-:-:Text-:-:Wrap"> <dt>GD::Text::Wrap: <a href="../ch13_04.htm#INDEX-2543">13.4.1. GD::Text</a></dt> <a name="Graph-modules"> <dt>Graph modules</dt><dd><dl> <a name="GD-:-:Graph3D"> <dt>GD::Graph3D: <a href="../ch13_04.htm#INDEX-2582">13.4.3. GD::Graph3D</a></dt> </dl></dd> <a name="Image-:-:Magick-features-vs."> <dt>Image::Magick features vs.: <a href="../ch13_05.htm#INDEX-2626">13.5.4. Image Processing</a></dt> <a name="installing"> <dt>installing: <a href="../ch13_03.htm#INDEX-2518">13.3.1. Installation</a></dt> </dl></dd><a name="GDBM-files"><dt>GDBM files: <a href="../ch10_02.htm#INDEX-2024">10.2. DBM Files</a></dt><a name="general-errors-creating-static-HTML-document-for"><dt>general errors, creating static HTML document for: <a href="../ch03_04.htm#INDEX-694">3.4.1. Check the Client Browser</a></dt><a name="GET-requests"><dt>GET requests: <a href="../ch02_03.htm#INDEX-308">2.3.1.2. GET</a></dt><dd><dl> <dt><a href="../ch11_01.htm#INDEX-2161">11. Maintaining State</a></dt> <a name="300-level-status-responses-to"> <dt>300-level status responses to: <a href="../ch03_03.htm#INDEX-615">3.3.1.3. Specifying status codes</a></dt> <a name="303-See-Other-status-header-and"> <dt>303 See Other status header and: <a href="../ch03_03.htm#INDEX-620">3.3.1.3. Specifying status codes</a></dt> <a name="mailing-list-form-example"> <dt>mailing list form (example): <a href="../ch04_01.htm#INDEX-760">4.1. Sending Data to the Server</a></dt> <a name="options"> <dt>options: <a href="../ch04_01.htm#INDEX-731">4.1. Sending Data to the Server</a></dt> <a name="parameters-visibility-in-URL"> <dt>parameters, visibility in URL: <a href="../ch08_02.htm#INDEX-1688">8.2.5. Trusting the Browser</a></dt> <a name="STDIN-problems-with-reading-from"> <dt>STDIN, problems with reading from: <a href="../ch03_01.htm#INDEX-512">3.1.1.1. STDIN</a></dt> </dl></dd><a name="get-subroutine"><dt>get subroutine: <a href="../ch14_05.htm#INDEX-2830">14.5. CGI Gateway to XML Middleware</a></dt><a name="Getopt-:-:Long-module"><dt>Getopt::Long module: <a href="../ch12_03.htm#INDEX-2359">12.3. Inverted Index Search</a></dt><a name="GIF-images"><dt>GIF images: <a href="../ch03_04.htm#INDEX-690">3.4.1. Check the Client Browser</a></dt><dd><dl> <dt><a href="../ch13_01.htm#INDEX-2450">13.1.1. GIF</a></dt> <a name="converting-from-PNG-images-to"> <dt>converting from PNG images to: <a href="../ch13_05.htm#INDEX-2615">13.5.2. Converting PNGs to GIFs or JPEGs</a></dt> <a name="GIFgraph"> <dt>GIFgraph: <a href="../ch13_04.htm#INDEX-2551">13.4.2. GD::Graph</a></dt> <a name="PNG-features-vs."> <dt>PNG features vs.: <a href="../ch13_01.htm#INDEX-2464">13.1.2. PNG</a></dt> </dl></dd><a name="glob-notation-avoiding-use-of"><dt>glob notation, avoiding use of: <a href="../ch17_01.htm#INDEX-3187">17.1.8. Avoid the Shell</a></dt><a name="global-directories-for-data-configuration-and-template-files"><dt>global directories for data, configuration, and template files: <a href="../ch16_01.htm#INDEX-3068">16.1.2. Use Directories to Organize Your Projects</a></dt><a name="global-variables"><dt>global variables</dt><dd><dl> <a name="declarations-strict-mode-and"> <dt>declarations, strict mode and: <a href="../ch15_02.htm#INDEX-2921">15.2.1. Use strict</a></dt> <a name="declaring-and-initializing"> <dt>declaring and initializing: <a href="../ch10_04.htm#INDEX-2130">10.4.2.2. Address book CGI script</a></dt> <a name="Embperl-module"> <dt>Embperl module</dt><dd><dl> <a name="defining-for-HTML-templates"> <dt>defining for HTML templates: <a href="../ch06_04.htm#INDEX-1447">6.4.4. Global Variables</a></dt> <a name="undefining-at-end-of-HTTP-request"> <dt>undefining at end of HTTP request: <a href="../ch06_04.htm#INDEX-1427">6.4.2.2. Variable scope</a></dt> </dl></dd> <a name="localizing"> <dt>localizing: <a href="../ch05_03.htm#INDEX-1146">5.3.3. Standard HTML Elements</a></dt> <a name="@RECORDS-AND@RELATED_RECORDS"> <dt>@RECORDS AND@RELATED_RECORDS: <a href="../ch14_05.htm#INDEX-2796">14.5. CGI Gateway to XML Middleware</a></dt> <a name="reducing-number-of-with-strict-pragma"> <dt>reducing number of with strict pragma: <a href="../ch01_02.htm#INDEX-49">1.2.1. Sample CGI</a></dt> </dl></dd><a name="globbing-wildcard-characters"><dt>globbing wildcard characters: <a href="../ch12_01.htm#INDEX-2315">12.1. Searching One by One</a></dt><a name="grammar-in-names-guidelines-for"><dt>grammar in names, guidelines for: <a href="../ch16_02.htm#INDEX-3123">16.2. Coding Guidelines</a></dt><a name="graphic-images-creating"><dt>graphic images, creating: <a href="../ch13_01.htm#INDEX-2443">13. Creating Graphics on the Fly</a></dt><dd><dl> <a name="image-data-outputting"> <dt>image data, outputting: <a href="../ch13_02.htm#INDEX-2485">13.2. Outputting Image Data</a></dt> <a name="Image-:-:Magick-module-using"> <dt>Image::Magick module, using: <a href="../ch13_05.htm#INDEX-2598">13.5. PerlMagick</a></dt><dd><dl> <a name="LZW-compression-enabling"> <dt>LZW compression, enabling: <a href="../ch13_05.htm#INDEX-2604">13.5.1.2. Enabling LZW compression</a></dt> <a name="requirements"> <dt>requirements: <a href="../ch13_05.htm#INDEX-2602">13.5.1.1. Requirements</a></dt> </dl></dd> </dl></dd><a name="Graphics-Interchange-Format"><dt>Graphics Interchange Format (see <a href="idx_g.htm#GIF-images">GIF images</a>)</dt><a name="graphics-toolkit-Tcl-scripting-language"><dt>graphics toolkit, Tcl scripting language: <a href="../ch15_03.htm#INDEX-3028">15.3.5.2. ptkdb</a></dt><a name="graphs"><dt>graphs</dt><dd><dl> <a name="GD-modules-producing-with"> <dt>GD modules, producing with: <a href="../ch13_04.htm#INDEX-2550">13.4.2. GD::Graph</a></dt> <a name="GD-:-:Graph-modules-for-creating"> <dt>GD::Graph modules for creating: <a href="../ch13_04.htm#INDEX-2555">13.4.2. GD::Graph</a></dt> <a name="generated-by-loads.cgi-sample"> <dt>generated by loads.cgi (sample): <a href="../ch13_03.htm#INDEX-2571">13.3.2. Using GD</a></dt> <a name="three-dimensional-generating-with-GD-:-:Graph3D"> <dt>three-dimensional, generating with GD::Graph3D: <a href="../ch13_04.htm#INDEX-2581">13.4.3. GD::Graph3D</a></dt> </dl></dd><a name="Greenwich-Mean-Time"><dt>Greenwich Mean Time (see <a href="idx_d.htm#DATE_GMT-variable">DATE_GMT variable</a>)</dt><a name="grep-command"><dt>grep command: <a href="../ch12_02.htm#INDEX-2325">12.2. Searching One by One, Take Two</a></dt><dd><dl> <a name="filtering-out-binary-files-with"> <dt>filtering out binary files with: <a href="../ch12_02.htm#INDEX-2333">12.2. Searching One by One, Take Two</a></dt> <a name="system-using-in-Perl"> <dt>system, using in Perl: <a href="../ch17_01.htm#INDEX-3185">17.1.8. Avoid the Shell</a></dt> </dl></dd><a name="grep_search1.cgi-script"><dt>grep_search1.cgi script: <a href="../ch12_01.htm#INDEX-2346">12.1. Searching One by One</a></dt><a name="grep_search2.cgi-script-example"><dt>grep_search2.cgi script (example): <a href="../ch12_02.htm#INDEX-2368">12.2. Searching One by One, Take Two</a></dt><a name="growth-planning-for"><dt>growth, planning for: <a href="../ch16_01.htm#INDEX-3053">16.1.1. Plan for Future Growth</a></dt><a name="gzip-encoding"><dt>gzip encoding: <a href="../ch02_06.htm#INDEX-491">2.6.3. 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