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Search within files

In most cases, Tiki can search the textual content within files. For example, the text in a .docx file. For images, please see OCR Indexing.

In most cases, this relies on utilities on the server. To check support on your server, use Tiki Check.

It is possible, once you enabled "Automatic indexing of file content" (Control Panels, File Galleries, Search Indexing tab ), to index the content of the files which are in the File Gallery so they can be retreived by a search. If you have a script that extracts the file content into a text, you can associate the script to the Mime type and the files content will be indexed.

If you want to search on files in the file galleries, you must provide handlers to extract the text for the file's MIME type (some may still work by default). The commands, such as strings or pdftotext must exist on your server. The type-command associations are defined in the Indexing tab of the Admin: File Gallery page.

MIME Type System command Ubuntu/Debian package with command
application/vnd.oasis.opendocument.presentation odt2txt %1 odt2txt
application/vnd.oasis.opendocument.spreadsheet odt2txt %1 odt2txt
application/vnd.oasis.opendocument.text odt2txt %1 odt2txt
application/vnd.openxmlformats-officedocument.wordprocessingml.document docx2txt.pl %1 -
application/ms-excel xls2csv %1 catdoc
application/ms-powerpoint catppt %1 catdoc
application/msword catdoc %1
or
strings %1
catdoc
application/pdf pstotext %1
or
pdftotext %1 -
poppler-utils or pstotext
application/postscript pstotext %1 pstotext
application/ps pstotext %1 pstotext
application/rtf catdoc %1 catdoc
application/sgml col -b %1
or
strings %1
bsdmainutils
application/vnd.ms-excel xls2csv %1 catdoc
application/vnd.ms-powerpoint catppt %1 catdoc
application/x-msexcel xls2csv %1 catdoc
application/x-pdf pstotext %1 poppler-utils or pstotext
application/x-troff-man man -l %1 man-db
text/enriched col -b %1
or
strings %1
bsdmainutils
text/html elinks -dump -no-home %1 elinks
text/plain col -b %1
or
strings %1
bsdmainutils
text/richtext col -b %1
or
strings %1
bsdmainutils
text/sgml col -b %1
or
strings %1
bsdmainutils
text/tab-separated-values col -b %1
or
strings %1
bsdmainutils


Several tools can be used to extract search strings; many Unix sites have "strings", which can detect things which appear to be text within files although without the accuracy of more specialized tools.

Ensure that the system command entered prints its output to the screen (standard output) and not to a file. Try the command on a console and check the manual. E.g. you have to add a trailing "-" to pdftotext.

It might be needed to clear the Tiki Cache after installing a new handler for the system to pick it up.

It's better if you have fileinfo installed to avoid misidentified mimetypes (install php-pear if you are using php < 5.3).

To install all required packages in a Debian-based server, you can use this command:

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sudo apt-get install bsdmainutils catdoc elinks man-db odt2txt php-pear pstotext


If you use WikiSuite, everything is pre-installed.

Related:

doc.tiki.org

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