Strigi was a file indexing and file search framework (see

desktop search Desktop search tools search within a user's own computer files as opposed to searching the Internet. These tools are designed to find information on the user's PC, including web browser history, e-mail archives, text documents, sound files, images ...

) adopted by KDE SC. Strigi was initiated by Jos van den Oever. Strigi's goals are to be fast, use a small amount of

RAM Ram, ram, or RAM may refer to: Animals * A male sheep * Ram cichlid, a freshwater tropical fish People * Ram (given name) * Ram (surname) * Ram (director) (Ramsubramaniam), an Indian Tamil film director * RAM (musician) (born 1974), Dutch * ...

, and use flexible backends and plug-ins. A benchmark as of January 2007 showed that Strigi is faster and uses less memory than other search systems, but it lacks many of their features. Like most desktop search systems, Strigi can extract information from files, such as the length of an audio clip, the contents of a document, or the resolution of a picture; plugins determine what filetypes it is capable of handling. Strigi uses its own Jstream system which allows for deep indexing of files. Strigi is accessible via

Konqueror Konqueror is a free and open-source web browser and file manager that provides web access and file-viewer functionality for file systems (such as local files, files on a remote FTP server and files in a disk image). It forms a core part of t ...

, or by clicking on its

icon An icon () is a religious work of art, most commonly a painting, in the cultures of the Eastern Orthodox, Oriental Orthodox, and Catholic churches. They are not simply artworks; "an icon is a sacred image used in religious devotion". The most ...

, after adding it to

KDE KDE is an international free software community that develops free and open-source software. As a central development hub, it provides tools and resources that allow collaborative work on this kind of software. Well-known products include the ...

Kicker Kicker or The Kicker may refer to: Sports * Placekicker, a position in American and Canadian football * ''Kicker'' (sports magazine), in Germany * Kicker, the German colloquial term for an association football player * Kicker, the word used i ...

GNOME Panel GNOME Panel is a highly configurable taskbar for GNOME. It formed a core part of the desktop in GNOME 1 and GNOME 2. It has been replaced in GNOME 3 by default with GNOME Shell, which only works with the Mutter window manager. There are many '' ...

. (In GNOME desktop, it is called the Deskbar applet.) The

graphical user interface The GUI ( "UI" by itself is still usually pronounced . or ), graphical user interface, is a form of user interface that allows users to interact with electronic devices through graphical icons and audio indicator such as primary notation, inst ...

(GUI) is named Strigiclient. It was replaced with

Recoll Recoll is a desktop search tool that provides full text search (from single-word to arbitrarily complex boolean searches) in a GUI with few mandatory external dependencies. It runs under many Unix-like Operating system, operating systems, and is ...

in KDE5 Plasma desktop environment.

Features

SHA-1 In cryptography, SHA-1 (Secure Hash Algorithm 1) is a cryptographically broken but still widely used hash function which takes an input and produces a 160-bit (20- byte) hash value known as a message digest – typically rendered as 40 hexadec ...

hash for every file indexed to find duplicates * As of July, 2007 Strigi supports indexing the contents of

plain text In computing, plain text is a loose term for data (e.g. file contents) that represent only characters of readable material but not its graphical representation nor other objects (floating-point numbers, images, etc.). It may also include a limit ...

, PDF,

MP3 MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) is a coding format for digital audio developed largely by the Fraunhofer Society in Germany, with support from other digital scientists in the United States and elsewhere. Origin ...

, archives, Debian and

RPM Revolutions per minute (abbreviated rpm, RPM, rev/min, r/min, or with the notation min−1) is a unit of rotational speed or rotational frequency for rotating machines. Standards ISO 80000-3:2019 defines a unit of rotation as the dimensionl ...

packages, and OASIS

OpenDocument The Open Document Format for Office Applications (ODF), also known as OpenDocument, is an open file format for word processing documents, spreadsheets, presentations and graphics and using ZIP-compressed XML files. It was developed wi ...

text (odt), spreadsheet (ods) and presentation (odp) files *

D-Bus In computing, D-Bus (short for "Desktop Bus") is a message-oriented middleware mechanism that allows communication between multiple processes running concurrently on the same machine. D-Bus was developed as part of the freedesktop.org project, ...

and socket support for communication between the daemon and search program * Small memory footprint * Xesam query language support * Very portable, currently runs on Linux, Solaris, FreeBSD, Mac OS X and Windows * Pluggable backend:

Lucene Apache Lucene is a free and open-source search engine software library, originally written in Java by Doug Cutting. It is supported by the Apache Software Foundation and is released under the Apache Software License. Lucene is widely used as ...

and HyperEstraier,

SQLite SQLite (, ) is a database engine written in the C programming language. It is not a standalone app; rather, it is a library that software developers embed in their apps. As such, it belongs to the family of embedded databases. It is the m ...

and

Xapian Xapian is a free and open-source probabilistic information retrieval library, released under the GNU General Public License (GPL). It is a full-text search engine library for programmers. It is written in C++, with bindings to allow use from ...

backends are being worked on *

inotify inotify ( inode notify) is a Linux kernel subsystem created by John McCutchan, which monitors changes to the filesystem, and reports those changes to applications. It can be used to automatically update directory views, reload configuration files ...

and synchronization to filesystem are being attempted. * Strigi's indexing can be stopped manually, and will suspend itself if running on a laptop's batteries, disk drive runs out of space, and/or runs in the background until the CPU is not busy with tasks that the computer-user is waiting on the CPU for.

Operating systems and desktops

Strigi used to be a core component of the

KDE Software Compilation The KDE Software Compilation (KDE SC) was an umbrella term for the desktop environment plus a range of included applications produced by KDE. From its 1.0 release in July 1998 until the release of version 4.4 in February 2010, the Software Comp ...

's semantic desktop. Strigi and

NEPOMUK Nepomuk (; german: Pomuk) is a town in Plzeň-South District in the Plzeň Region of the Czech Republic. It has about 3,700 inhabitants. It is known as the birthplace of Saint John of Nepomuk, who was born here around 1340 and whose statue can b ...

used to work together to help create a semantic desktop search. NEPOMUK allows the user to add metadata, which Strigi would index for a more precise search. It has since been replaced with a home-grown solution, the nepomuk-metadata-extractor. GNOME has an optional applet to search for files using Strigi, named Deskbar. Deskbar is included in the GNOME desktop of

Ubuntu Ubuntu ( ) is a Linux distribution based on Debian and composed mostly of free and open-source software. Ubuntu is officially released in three editions: '' Desktop'', ''Server'', and ''Core'' for Internet of things devices and robots. All ...

8.10, for example.

References

External links

Strigi home page

Jos van den Oever's own Strigi page

KDE dot article on Strigi in KDE 4
{{Navigationbox Desktopsearch Desktop search engines Free software programmed in C++

Features

Operating systems and desktops

See also

References

External links