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There are 2 Ubuntu user accounts.

I have about 6-7 Firefox profiles in my Ubuntu user account.

I want to install an extension into all of them but not into Firefox profiles of the other Ubuntu user account.

How do I?

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Start Firefox with every profile and install the extension...

firefox -P 
firefox -ProfileManager

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The -P option opens the profile manager from which you can choose a profile. How will that install the addon in all profiles? – learner Jun 6 '13 at 13:13
Please read my comment: Start Firefox with every profile and install the extension – Manuel Jun 6 '13 at 13:15
Okay, that is quite obvious. I am looking for a place where I could leave the extension so Firefox could pick it up to all the required profiles. – learner Jun 6 '13 at 16:08
Not very helpful answer! – txwikinger Jan 12 '15 at 4:04

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