From MEPIS Documentation Wiki
Nepomuk is a system component that classifies, organizes and presents data, while Strigi is a deep-indexed search daemon. Together they provide integrated and pervasive search options in all applications built on the KDE platform.
NOTE: by default, the following steps 1-3 should be already set up.
1. Delete the following files in /etc/kde4 as root:
nepomukserverrc nepomukstorage.notifyrc nepomukstrigiservice.notifyrc
3. Click System Settings > Desktop Search. Check Enable Nepomuk Semantic Desktop
To finish setting up Nepomuk Semantic Desktop and Strigi Desktop File Indexer in Mepis 11.0:
4. On the System Settings > Desktop Search screen, check to Enable Strigi Desktop File Indexer
5. Click on the File Indexing tab to select the folders you want to be searched (default = /Home/yourusername). You can also add removable media.
Soon after that, Nepomuk will start indexing your folders. Indexing will only happen when the system is otherwise idle, so as not to disturb your workflow and make the machine less responsive while you are using it. File indexing will also be suspended when you run on battery to save power by delaying energy-consuming disk access and CPU cycles to a later point.
A strigi icon is added to the System Tray. Right clicking on the icon pops up a dialog from which you can configure the indexer or suspend indexing. Hovering over the icon will give you the status of the indexer, whther idle or in the process of indexing.
Nepomuk automatically picks up changed files. After initial indexing, it only incrementally updates its index. Nepomuk doesn't replace the traditional view on the filesystem, but augments it with metadata and linking between files and other, more abstract concepts, called "Resources".
You can bookmark queries to the search index, and use them like real folders from all your applications. Tagging files allows you to group certain files under more than one topic, adding flexibility to your filesystem hierarchy.
Tips and Tricks
Searching in Files with Dolphin.
Click in the search box, Then an additional bar with search options is displayed below the toolbar. By clicking on the green (+) button, it is posible to specify the searching in a very detailed manner.
In any location bar within a KDE application (like in Dolphin and Konqueror, but also in File Open and Save dialogs), you can access this timeline view by Pressing, F6, typing as location
This will show you a view of files you have accessed grouped by date, making it easier to find what you've been working on. You can add this timeline view to your Places sidebar in Dolphin and in file dialogs either by dragging the location or by clicking with your right mouse button in the in the folder display window and choosing "Add to Places".