(r18) TWikiSystemRequirements < TWiki

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---# TWiki Application Environment

_Server and client system requirements; file system structure_

---++ Overview

Maintaining minimum client and server requirements is necessary to keep TWiki deployment as broad as possible. 

---++ Server-Side Requirements

TWiki is written in Perl 5 and uses a number of shell commands. It requires GNU RCS (Revision Control System) to be installed on the same system. TWiki is developed in a standard Linux/Apache environment. It can also work with Microsoft Windows and other platforms.

| *Required Server Environment* |||
| *Resource* | *Unix* | *Windows* |
| Perl |  5.005_03 or higher  ||
| Non standard Perl modules |  =Net::SMTP= (or =sendmail=)  |  =Net::SMTP=, =MIME::Base64=,  =Digest::SHA1= |
| RCS |  5.7 or higher  ||
| Other external programs |  =ls, fgrep, egrep=  ||
| Web server |  Apache; others (with support for CGI, authentication, extended path) ***  ||

Current documentation covers Linux only. Compiling a basic [[http://twiki.org/cgi-bin/view/Codev/TWikiOnWindows][TWikiOnWindows]] installation guide is an ongoing effort. 

---++ Client-Side Requirements

The TWiki standard installation has extremely low browser requirements:

   * HTML 3.2 compliant
   * minimal use of <nop>JavaScript in the user interface (degrades gracefully)
   * no cookies
   * no CSS

TWiki generates XHTML 1.0 code as long as it is compatible with HTML 3.2.

---+++ Known Issues

   * The new TWikiPlugins feature currently does not have any compatibility guidelines for developers. Plugins can require just about anything: browser-specific functions, stylesheets (CSS), Java, cookies, etc.

---++ TWiki File System

You can rename the root TWiki directory - =twiki= - to whatever you like by changing it in the =twiki.cfg= configuration file. However, to keep the current installation and future upgrades simple, you should leave the subdirectory structure intact:

| *Directory:*        | *Files:*       | *Used for:* |
| =twiki=           |  [[#TWikiFiles][list]]  | Start-up info |
| =twiki/bin=       |  [[#BinFiles][list]]  | Perl scripts  |
| =twiki/lib=       |  [[#LibFiles][list]]  | Configuration file, main library, Perl system modules, Plugins |
| =twiki/pub=       |  [[#PubFiles][list]]  | Public support files (ex: FileAttachments, images) and RCS histories) |
| =twiki/data=      |  [[#DataFiles][list]]  | Topic text (page content) and RCS histories; |
| =twiki/templates= |  [[#TemplatesFiles][list]]  | HTML templates, used by TWiki scripts |

---+++ File Descriptions

A rundown of the individual files included in the current 01-Sep-2001 distribution, organized by TWiki root directories.

#TWikiFiles
---++++ Files in <code>twiki</code>

Application info and the current reference documentation. _Full file list:_

| *File:*       | *Used for:* |
| =index.html= | A page with a link to first launch TWiki after install |
| =license.txt=        | GNU General Public License and TWiki-specific info |
| =readme.txt=        | General TWiki start-up info with relevant URLs |
| =TWikiDocumentation.html=          | All documentation packaged as a single page |
| =TWikiHistory.html=        | TWiki development timeline |

#BinFiles
---++++ Files in <code>twiki/bin</code>

Perl CGI scripts. _Full file list:_

| *File:*       | *Used for:* |
| =.htaccess.txt= | Authentication. Rename to .htaccess and customize if used |
| =attach=        | Script that shows the attach file page (FileAttachment) |
| =delete=        | (not used yet) |
| =edit=          | Script to edit a topic |
| =geturl=        | Script to fetch URL data |
| =mailnotify=    | Script called by cron job to notify users of changes |
| =oops=          | Script that shows an OK or oops dialog |
| =preview=       | Script to preview topic after edit |
| =rdiff=         | Script to see differences of topics |
| =rename=        | Script to rename/move topics and move attachments |
| =register=      | Script to register new users |
| =save=          | Script that saves a topic, called by preview |
| =search=        | Script that displays search results |
| =statistics=    | Script to create statistics topic |
| =testenv=       | Script to test CGI environment variables |
| =upload=        | Script that does file upload (FileAttachment) |
| =view=          | Script to view a topic ( *the* script ) |
| =viewfile=      | Script to view an file attachment |

#LibFiles
---++++ Files under <code>twiki/lib</code>

The new =lib/TWiki/Plugins= directories contain configuration, library and function files, and [[TWikiDocumentation#TWiki_Plugins][TWikiPlugins]]. _Full file list:_

| *File:*           | *Used for:* |
| =TWiki.pm=      | Main TWiki library |
| =TWiki.cfg=     | For configuration, used by =TWiki.pm= |
| =TWiki/Access.pm=   | Access control |
| =TWiki/Attach.pm=   | Attachment handling |
| =TWiki/Form.pm=     | Form handling |
| =TWiki/Meta.pm=     | Meta data in topics |
| =TWiki/Net.pm=      | SMTP mail handling |
| =TWiki/Plugins.pm=  | Plugin handling |
| =TWiki/Prefs.pm=    | Preferences handling |
| =TWiki/Search.pm=   | Search engine, used by wiki.pm |
| =TWiki/Store.pm=    | Back-end storage, =*.txt= text file and =*.txt,v= RCS repository file handling |
| =TWiki/Plugins/DefaultPlugin.pm= | Handles some legacy rules |
| =TWiki/Plugins/EmptyPlugin.pm=   | Empty plugin, use to create your own |
| =TWiki/Plugins/InterwikiPlugin.pm= | Use aliases as links for predefined URLs |

#PubFiles
---++++ Files under <code>twiki/pub</code>

The =pub= directory stores data-related files, including images used by TWiki and FileAttachments. Attachments are stored in sub-directories created with the related topic name. _Partial file list:_

| *File:*         | *Used for:* |
| =favicon.ico= | ICO file |
| =twikilogo.gif= | GIF file |
| =twikilogo1.gif= | GIF file |
| =twikilogo2.gif= | GIF file |
| =twikilogo3.gif= | GIF file |
| =twikilogo4.gif= | GIF file |
| =wikiHome.gif= | GIF file |
| =icn/_filetypes.txt= | GIF file |
| =icn/bat.gif= | GIF file |
| =icn/bmp.gif= | GIF file |
|  *...*  |  *...*  |
| =TWiki/FileAttachment/Sample.txt= | TEXT file |
| =TWiki/FileAttachment/Smile.gif= | GIF file |
| =TWiki/PreviewBackground/blankltgraybg.gif= | GIF file |
| =TWiki/PreviewBackground/blankwhitebg.gif= | GIF file |
| =TWiki/PreviewBackground/previewbg.gif= | GIF file |
| =TWiki/WabiSabi/wabisabi.gif= | GIF file |

#DataFiles
---++++ Files under <code>twiki/data</code>

TWiki page data stored as individual text files. Each active web has its own subdirectory. The TWiki distribution includes four start-up webs - =Main=, =TWiki=, =Know=, =Test= - with documentation and demo content, and a =_default= directory containing all topics required to start a new web. _Partial file list:_ 

| *File:*         | *Used for:* |
| =.htpasswd= | Basic Authentication (htaccess) password file |
| =debug.txt= | Program messages useful for debugging |
| =mime.types= | Recognized file formats |
| =warning.txt= | Diagnostic messages for identifying problems |
| _default directory can be copied to empty directory when creating new Webs ||
| =_default/.changes= | Web-level record of topic changes |
| =_default/WebChanges.txt= | Display most recent topic changes in web|
| =_default/WebChanges.txt,v= | Revisions history (RCS) |
| =_default/WebHome.txt= | Default web home page |
| =_default/WebHome.txt,v= | Revisions history (RCS) |
| =_default/WebIndex.txt= | Lists all topics in a web|
| =_default/WebIndex.txt,v= | Revisions history (RCS) |
| =_default/WebNotify.txt= | Subscribe/unsubscribe to web changes email alert |
| =_default/WebNotify.txt,v= | Revisions history (RCS) |
| =_default/WebPreferences.txt= | Web-level preference settings |
| =_default/WebPreferences.txt,v= | Revisions history (RCS) |
| =_default/WebSearch.txt= | Web-level search options |
| =_default/WebSearch.txt,v= | Revisions history (RCS) |
| =_default/WebStatistics.txt= | Generates web usage statistics |
| =_default/WebStatistics.txt,v= | Revisions history (RCS) |
|  *...*  |  *...*  |

#TemplatesFiles
---++++ Files in <code>twiki/templates</code>

Templates used to control appearance of all rendered pages. _Full file list:_

| *File:*         | *Used for:* |
| =oopsbadpwformat.tmpl= | Error message |
| =attachagain.tmpl= | Control screen |
| =attachnew.tmpl= | Control screen |
| =changeform.tmpl= | Control screen |
| =changes.tmpl= | Displays WebChanges list of recently changed topics |
| =edit.iejs.tmpl= | xxxx |
| =edit.tmpl= | Main edit window |
| =mailnotify.tmpl= | xxxx |
| =moveattachment.tmpl= | Control screen |
| =oopsaccesschange.tmpl= | Error message |
| =oopsaccessgroup.tmpl= | Error message |
| =oopsaccessrename.tmpl= | Error message |
| =oopsaccessview.tmpl= | Error message |
| =oopsauth.tmpl= | Error message |
| =attach.tmpl= | Error message |
| =oopschangepasswd.tmpl= | Error message |
| =oopsempty.tmpl= | Error message |
| =oopslocked.tmpl= | Error message |
| =oopslockedrename.tmpl= | Error message |
| =oopsmissing.tmpl= | Error message |
| =oopsmoveerr.tmpl= | Error message |
| =oopsnoformdef.tmpl= | Error message |
| =oopsnotwikiuser.tmpl= | Error message |
| =oopsnoweb.tmpl= | Error message |
| =oopspreview.tmpl= | Error message |
| =oopsregexist.tmpl= | Error message |
| =oopsregpasswd.tmpl= | Error message |
| =oopsregrequ.tmpl= | Error message |
| =oopsregthanks.tmpl= | Error message |
| =oopsregwiki.tmpl= | Error message |
| =oopsrenameerr.tmpl= | Error message |
| =oopsresetpasswd.tmpl= | Error message |
| =oopsrev.tmpl= | Error message |
| =oopssave.tmpl= | Error message |
| =oopssaveerr.tmpl= | Error message |
| =oopssendmailerr.tmpl= | Error message |
| =oopstopicexists.tmpl= | Error message |
| =oopsupload.tmpl= | Error message |
| =oopswrongpassword.tmpl= | Error message |
| =preview.tmpl= | Preview Changes screen |
| =rdiff.tmpl= | Displays text changes before &amp; after (Diffs) |
| =register.tmpl= | Registration page |
| =registernotify.tmpl= | xxxx |
| =rename.tmpl= | Doing a new topic rename, user chooses web &amp; topic |
| =renamebase.tmpl= | Used by other rename templates |
| =renameconfirm.tmpl= | Confirms a pre-specified rename, ex: undoing a rename |
| =renamerefs.tmpl= | Rename done, but some references not changed (topics were  locked) |
| =search.tmpl= | xxxx |
| =searchbookview.tmpl= | Search results with full topic content |
| =searchmeta.tmpl= | xxxx |
| =searchrenameview.tmpl= | Used by =rename= to list references to topic being renamed |
| =twiki.tmpl= | Base template definitions used by other templates |
| =view.plain.tmpl= | Alternate topic header/footer view |
| =view.print.tmpl= | Alternate topic header/footer view |
| =view.tmpl= | Main topic view |

-- MikeMannix - 29 Aug 2001
Versão do tópico: r18 - 08 Sep 2001 - MikeMannix
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