In general I'd recommend just writing down the group and PPA name and reinstalling them with apt-add-repository.  It'll handle all the tricky parts there.  If you keep track of ppa:foo/bar that's probably better when reinstalling.

Also, as usual when talking about PPAs, they're really for developers.  If you're installing a PPA on your system you're giving everyone who can upload to that PPA administrative access on your machine.  Be sure that you're okay with that, it's a huge amount of trust.

Ted

On Fri, 2013-12-27 at 16:34 -0700, Brian Cluff wrote: 
In addition to that, be sure to grab /etc/apt/trust* or else your system 
will complain like crazy about all the untrusted packages.

Brian Cluff

On 12/27/2013 01:32 PM, Michael Butash wrote:
> If you have to, they're under /etc/apt/sources*, making sure you get
> sources.list and sources.list.d directories there.  PPA's are usually
> installed under sources.d, but not all how-to's tell you to manually
> drop them there.
>
> -mb
>
>
>
> On 12/27/2013 01:21 PM, Michael Havens wrote:
>> well.... it looks as if I may have to reinstall my laptop (which
>> sucks) if we can't get x working again. I  just realized something I
>> didn't do: I did not write down all the ppa addresses. So what I would
>> like to know is in which file are the ppa s kept? then I can scp that
>> to the tv server and if we can't get x working again it won't be as
>> painful a bite. Thanks:-)
>> :-)~MIKE~(-:
>>
>>
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