19
While the symbol was part of the Unicode 10.0 release, many fonts still don't have the symbol as part of their character set. You need to install a font that includes the symbol to make it show up.
One such font is GNU Unifont Glyphs. After installing the package unifont, the symbol shows up in the console and browser for me.
Corollary, many Linux ...
16
CPU mining is no longer supported. See CGMiner FAQ:
Q: What happened to CPU mining?
A: Being increasingly irrelevant for most users, and a maintenance issue, it is
no longer under active development and will not be supported. No binary builds
supporting CPU mining will be released. Virtually all remaining users of CPU
mining are as back ends for illegal ...
14
When building the source use:
./configure --enable-cpumining && make
At the end of the configure stage you will see a list of what has been enabled, like this:
------------------------------------------------------------------------
cgminer 2.9.6
------------------------------------------------------------------------
Configuration Options ...
11
There are several options for Mining Bitcoins some of these are no longer profitable, but for the sake of being thorough here they are in order of efficiency lowest to highest:
Methods
CPU Mining (minerd)
GPU Mining (cgminer, bfgminer)
FPGA Mining (Custom software - https://github.com/fpgaminer/Open-Source-FPGA-Bitcoin-Miner)
ASIC Mining (cgminer, bfgminer,...
9
Just some thoughts:
As of the time of writing the main net's full blockchain size is 21,670,092,800 bytes, a bit more than 20 GB, that is. So you should have way more disk space that just 20-30 GB.
A Raspberry Pi runs with an SD. SD is known for its limited rewriting capabilities (it's not a heavy duty storage solution, it will bite the dust after a while) ...
8
.exe files are for windows only. Linux systems do not use the same file extension or file type as windows. I assume you just want to create a Linux binary that can be used on all systems without installing all dependencies. To do that, you can use Bitcoin Core's depends system. Instructions are here: https://github.com/bitcoin/bitcoin/tree/master/depends.
...
7
Type "ldconfig" to update the links
7
You can run a Raspberry Pi with bitcoind no problem. I have several Pi's running bitcoind in various locations and some of them have over 100 connections. Use a 64GB flash card and make sure you have a 512MB swap file. The only limitation you will find is your broadband upload speed , the Pi or it's flashcard will not be the bottlekneck. Use a good quality ...
6
did you look at bitcoind?
It does everything you are looking for.
-port= Listen for connections on (default: 8333 or testnet: 18333)
-walletnotify= Execute command when a wallet transaction changes (%s in cmd is replaced by TxID)
-alertnotify= Execute command when a relevant alert is received (%s in cmd is replaced by message)
http://...
4
If you don't want to compute the key manually, there's a useful command-line utility for this called bitcoin-tool:
$ ./bitcoin-tool \
--input-file <(echo -n 'Hi guys!' | openssl dgst -sha256 -binary) \
--input-format raw \
--input-type private-key \
--network bitcoin \
--output-type private-key-wif \
--output-format base58check \
--public-...
4
If you are after bitcoins I wouldn't even spend time on CPU or GPU. It is now difficult with specialized hardware (butterfly labs, kncminer ... ). You can have a look at cloud mining (cexio) as well it is expensive and you have to have bitcoins already but you can buy and sell GH/s and you can actually make more from trading than mining.
4
Change the -datadir flag to a new absolute location. Each instance will follow the bitcoind.conf in their respective directory.
4
To find the list of most common commands type
bitcoin-cli help
for a list of all commands refer to the bitcoin client API.
4
First close your client down and then copy the .bitcoin folder that was created in your home directory to the new location where you wish to store the data. Second create a symbolic link using the new path:
ln -s /new/path/to/.bitcoin .bitcoin
Finally restart the bitcoin client and it will use the blockchain stored at /new/path/to/.bitcoin (or wherever ...
4
There is a program called CudaMiner that can be compiled to run on Linux.
https://github.com/cbuchner1/CudaMiner/
I've also written some more notes about compiling CudaMiner here
http://www.fractured-state.com/2014/03/scrypt-mining-on-aws-nvidia-gpu-with-cudaminer/
UPDATE:
The second link is dead already, but a similar tutorial is detailed in this thread:
...
4
Since this is the first result that pops up on google when searching "bitcoin windows depends build" and the user asked how to build the .exe (but was actually looking for static build instructions on ubuntu) the correct instructions would be to use cross compilation with the depends system as specified in the documentation here: https://github.com/bitcoin/...
4
There is no need to resolve anything - some miners create arbitrary versions to attempt to speed up the mining process, as it gives them an additional field in the block block header to alter without having to recalculate the merkle root and other fields.
This is harmless, provided they aren't producing invalid blocks for version 2, in which case the block ...
3
Probably, better to add new user.
Simply create new user:
# adduser bitcoin1
# adduser bitcoin2
# su -l bitcoin1 -c 'bitcoind'
# su -l bitcoin2 -c 'bitcoind'
3
From the description you are giving it sounds like you haven't yet synchronized with the network. Before you can start doing anything useful, e.g., see your current balance, the bitcoind client downloads the entire blockchain and verifies it. This may take quite some time and will likely keep your CPU busy until its done. You can check the progress of the ...
3
The following code snippets are taken from the blog post:
http://www.righto.com/2014/02/bitcoins-hard-way-using-raw-bitcoin.html
It is a great read and you should take a look at it.
import random, keyUtils
#FOR DEMO ONLY.USE A CRYPTOGRAPHICALLY SECURE RANDOM GENERATOR IN PRODUCTION
private_key = ''.join(['%x' % random.randrange(16) for x in range(0, 64)])...
3
Check out this shell script, which generate a public/private bitcoin address pair.
3
I recommend simply using vanitygen like this:
vanitygen -1 1
This will generate a small number of addresses that you can use, as well as their private keys.
vanitygen is trivial to install on any POSIX system and is proven to work.
Alternatively, you can try bitcoin-bash-tools. Source that from your .bashrc or simply run it, then you can create a new ...
3
The Linux installer is slightly different to the windows installer in that there are different scripts to get the host machine to recognise the bitcoin URIs.
What ARE very similar is the multibit-exe.jar (used on Linux and Mac) and the multibit.exe (used in Windows). The exe is basically a wrapped jar file.
On any operating system you can run MultiBit jar ...
3
It's pointless. With that kind of hardware, it would take you on the order of a month to mine a dollar's worth of Bitcoins, and the electricity used would cost you many times that.
3
The easiest solution would be to upgrade to the recently released version 0.12.0 which allows running a wallet while in pruning mode (which was not possible with 0.11.2). That way you can limit the required diskspace, still have a fully validating node, and don't need to do update your integration.
After the upgrade to 0.12.0 you just start bitcoind with -...
3
I recommend reading about the Bitcoin Data Directory. You should also take a look at this answer: How do I specify in which directory Bitcoin blocks and other data should be stored?
Basically, all your Bitcoin data is stored in ~/.bitcoin on Linux. Not only can you specify a different location for this directory using -datadir=/some/other/directory, but ...
3
The provided approach is correct.
A binary itself does not handle any requests. When you run bitcoind with separate instances of the config and data directories, the system will create multiple instances of the bitcoind program to execute. Each of these instances is a fully independent bitcoin node, and has no relation to any other instance running on that ...
2
Upstart is the preferred method, have it launch your mining program on boot and respawn the program if it dies.
Checking if it's working is another matter, it requires a more meta approach. I would suggest you start another script that queries bitcoind via the command line, parses the response, and kills the process if it's not mining. Upstart will see ...
2
bitcoin data dir link in the wiki:
https://en.bitcoin.it/wiki/Data_directory
... shows where all the data files are located, the "a proper folder" link from ThePiachu 's post seems to have died since.
2
I am now using cgminer 3.4.2 (Ubuntu 12.04LTS) as it is much more stable than bfgminer and all the bugs in cgminer have been worked out (it also supports hot plugging)
The best way is to compile cgminer from git direct. There is some dependency on usbdev1 that needs to be compiled into cgminer.
Install the dependencies using apt-get (including all the ...
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