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To better understand what I need: In systemsettings (KDE), in icon theme module, after I change the icon theme, I click apply. I need to know which command line I run to do the same when I click apply button. It is qbus related?

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First, it isn't QBus related, second, you can usually change KDE configuration from ~/.kde4/share or ~/.config. It is sort of hard to find the configuration file though :/ – MiJyn Nov 28 '12 at 18:26
Yep, I know where the configuration files are located. What I do know is how to apply the changes. Not simply change settings values in files and save. You need to run some command to apply the changes, what? Ahh, and without the need to reboot – Frank Souza Nov 28 '12 at 21:45
Oh, I see... something like a restart of the KDE settings daemon, right? – MiJyn Nov 28 '12 at 21:55
Exactly! Any idea? – Frank Souza Nov 28 '12 at 21:57
I'm sorry, I don't use KDE... was just throwing suggestions :) – MiJyn Nov 28 '12 at 21:59

The command to reload the KDE configuration is:

$ kbuildsycoca4

But I can not test it with the icon theme, because you have not mentioned where exactly is the icon theme config located and it's not so obvious to me.

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