eventually i found good implementation of tags on linux file system.

Adding a tag is as simple as:

$ tag -a my_brand_new_tag my_file

Doing the same, recursively:

$ tag -ra 2013 ~/photos

Unicode is supported, too!

$ tag -a ♥ ~/photos/wizzup.png

Listing tags:

$ tag -l ~/photos/wizzup.png
~/photos/wizzup.png: 2013, ♥

http://hetgrotebos.org/wiki/neversearch

#tag #tags #file_system #filesystem #operating_systems #linux #unix