Bitcoin Forum

I looked around and didn't manage to work out how to easily run the 0.9.1 bitcoin qt client in Ubuntu 13.04. Why they changed it so that you can't just run it by double clicking on the qt client like it's been for all previous versions I've used is beyond me. I just want to sync the blockchain and transfer some coin. Is there any good reason why I shouldn't just use 0.8.6 which actually works when I double click on it? Would it be safe? Would 0.8.6 be appropriate to safely generate some cold storage wallets on an offline computer?

Thanks

Well, 0.8.6 is safe but there are risks.
The reason why they updated is because of safety, so you should really try to get the wallet to work.

How do you get it to run?

Did you make the file executable? (RClick in GUI -> Properties -> check "allow execution as programm")

Yeah, I tried that. Doesn't work whether I double click, or enter 'bitcoin-qt' or 'bash bitcoin-qt' in terminal. It's kind of ridiculous that the feature to run the client easily was removed for 0.9.1 ... I actually went through many other steps from a thread here a while ago, but it didn't help. Sorry, can't recall the thread, and don't have time to 'develop' a fix.

So does anyone know enough about the fine details of the client updates to know whether I'm actually safe to do what I described with 0.8.6?

Not sure if this would help.
Have you tried chmod +x bitcoin-qt then ./bitcoin-qt.
The first command will set bitcoin-qt to be executable then ./bitcoin-qt will try to run it.

If you didn't manage to run the 0.9.1 bitcoin qt client, either use or donate to the mutil wallet developers or to an independent third party developer who can write the necessary code, or test existing solutions.

the older wallet is all good man. i use it on linux too

If none of this https://bitcoin.org/en/version-history concerns you, you should be good.

I was actually reading this and though well OP is fine, but then I didnt post that because I was not sure what OP actually wants to do.

For generating keys thats fine, but an offline wallet would also sign transactions. So the "Transaction malleability-related fixes" might be an issue. Esp. the tightening of "IsStandard()" might result in transactions that are not broadcasted across the network.

Yeah, I couldn't be sure that I fully understood all the implications of the 0.9.0 version changes. It appears that I in deed didn't. The "IsStandard()" thing could be problematic.




Yes! I had tried chmod +x bitcoin-qt, but had then entered bitcoin-qt. Entering ./bitcoin-qt got it.  Thanks.

One of these days I'll get round to learning linux properly...

I know, sometimes there's so many options on what they don't post or want to do exactly. So I just post the info and let them make up their own mind. If there are more questions they always can come back.

In this case OP also could generate the keys in 0.8.6 and by the time he wants to spend he simply imports the wallet.dat in a (by that future time) current Bitcoin Core (as long as it's backward compatible).

But of course, IMHO, if there is a true offline computer to be involved, why not use Armory in the first place? The beauty of bitcoin: So many options :)

0.8.6 version is very safe