Hi!
If you're running a NAS, you got several files. And what if... you're looking for a document that's called "Juli.doc" and you don't know, where it is located? Search with windows-search and wait some hours?
Login as root to your command-line and type apt-get install mlocate. After that, you've to modify the config-file pico /etc/updatedb.conf. Locate in that file the line PRUNEPATHS="/tmp /var/spool /media and delete "/media" from that line. Save the changes with "STRG+O" followed by "Enter".
Now it's time to update the database: updatedb - this could take a time. In future the database is updated automatically once a day. So you don't have to run this command every day.
Locating your files:
locate -i juli.doc
Use the "-i" for ignoring upper- or lower-case. You will be shown the results as a list.
BTW: Wouldn't a search be a good idea for a plugin?
If you like something like that for your PC, you'll find some solutions. Easiest way is to look into the index of the file-systems (NTFS, FAT32 etc.). Programms like FindOnClick are doing so. But they don't work on network-shares.