How to SAVE new instructions added to the Firefox user preferences file?

Bas Roufs basroufs at
Mon Dec 29 14:37:09 UTC 2008

Dear Everybody

At present, I am trying to save a few added instructions to this file:
It is the file which contains the user preferences for Firefox 3.05 at
Kubuntu  8.10.
Via Kate, I try to add some instructions meant to instruct Firefox to
allow to use the 'Rich Text editing demo' functionality at a specific
website - in my case a site via which I am working at the website for
a client. That's why, I have opened a few times the above mentioned
prefs.js file with Kate and pasted to it some instructions copied from
this site:
While doing so, I also took into account special Linux/ Unix
instructions from this site:
So, I quitted Firefox and copy-pasted the new instructions into the
file as summarised above; a few times I did so as 'normal' user, a few
other times I opened Kate via a terminel > sudo kate. However, neither
way worked out. The new instructions 'vanish' out of the file whenever
I open again Firefox.
Can anybody tell me how to save these new instructions in such a way
that Firefox can work with them? Is it necessary to do so as 'super
user'? If so, is the way I have done so so far (terminal > sudo kate >
password) correct? Or is there more correct way to indicate my super
user status in this situation?

If you manage to give me some input, thank you very much!


Bas G. Roufs M.A.
Van 't Hoffstraat 1
NL-3514 VT  Utrecht
M. +31.6.446.835.10
T. +31.30.785.20.40
BasRoufs at

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