Issues about dcop

[hbprotoss]

Hello everybody.
I'd like to ask whether "dcop" tool is not available on KDE 4.8 any more?
  I want to change wallpapers automatically, but no suitable tools have 
been found. I checked the wikipedia, found DCOP protocol, and it says 
dcop command-line tool can help, but I can't find it on KDE 4.8.

/*No command 'dcop' found*/

I'm running kubuntu with KDE 4.8.3. Can any one help me? Thanks
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