+
+## What Is A Full Node?
+
+A full node is a program that fully validates transactions and blocks.
+Almost all full nodes also help the network by accepting transactions
+and blocks from other full nodes, validating those transactions and
+blocks, and then relaying them to further full nodes.
+
+Most full nodes also serve lightweight clients by allowing them to
+transmit their transactions to the network and by notifying them when a
+transaction affects their wallet. If not enough nodes perform this
+function, clients won't be able to connect through the peer-to-peer
+network---they'll have to use centralized services instead.
+
+Many people and organizations volunteer to run full nodes using spare
+computing and bandwidth resources---but more volunteers are needed to
+allow Bitcoin to continue to grow. This document describes how you can
+help and what helping will cost you.
+
+## Costs And Warnings
+
+Running a Bitcoin full node comes with certain costs and can expose you
+to certain risks. This section will explain those costs and risks so you
+can decide whether you're able to help the network.
+
+### Special Cases
+
+Miners, businesses, and privacy-conscious users rely on particular
+behavior from the full nodes they use, so they will often run their own
+full nodes and take special safety precautions. This document does not
+cover those precautions---it only describes running a full node to help
+support the Bitcoin network in general.
+
+Please [consult an expert](/en/community) if you need help setting up
+your full node correctly to handle high-value and privacy-sensitive
+tasks.
+
+### Secure Your Wallet
+
+It's possible and safe to run a full node to support the network and use
+its wallet to store your bitcoins, but you must take the same
+precautions you would when using any Bitcoin wallet. Please see the
+[securing your wallet page](/en/secure-your-wallet) for more
+information.
+
+### Minimum Requirements
+
+Bitcoin Core full nodes have certain requirements. If you try running a
+node on weak hardware, it may work---but you'll likely spend more time
+dealing with issues. If you can meet the following requirements, you'll
+have an easy-to-use node.
+
+* Desktop or laptop hardware running recent versions of Windows, Mac OS
+ X, or Linux.
+
+* 50 gigabytes of free disk space
+
+* 2 gigabytes of memory (RAM)
+
+* Broadband Internet connection
+
+* 6 hours a day that your full node can be left running. (You can do
+ other things with your computer while running a full node)
+
+### Possible Problems
+
+* **Legal:** Bitcoin use is [prohibited or restricted in some
+ areas](http://bitlegal.io/)
+
+* **Anti-virus:** Several people have placed parts of known computer
+ viruses in the Bitcoin block chain. This block chain data can't infect
+ your computer, but some anti-virus programs quarantine the data any
+ way, making it more difficult to run a full node. This problem mostly
+ affects computers running Windows
+
+* **Attack target:** People who want to disrupt the Bitcoin network may
+ attack full nodes in ways that will affect other things you do with
+ your computer, such as an attack that limits your available download
+ bandwidth or an attack that prevents you from using your full node's
+ wallet for sending transactions
+
+## Linux Instructions
+
+The following instructions describe installing Bitcoin Core on Linux
+systems.
+
+### Ubuntu 14.10 Desktop
+
+*Instructions for Bitcoin Core 0.10.0.*
+
+Click the Ubuntu swirl icon to start the Dash and type "term" into the
+input box. Choose any one of the terminals listed:
+
+
+
+Type the following line to add the Bitcoin Personal Package Archive
+(PPA) to your system:
+
+ sudo apt-add-repository ppa:bitcoin/bitcoin
+
+You will be prompted for your user password. Provide it to continue.
+Afterwards, the following text will be displayed:
+
+ Stable Channel of bitcoin-qt and bitcoind for Ubuntu, and their dependencies
+ More info: https://launchpad.net/~bitcoin/+archive/ubuntu/bitcoin
+ Press [ENTER] to continue or ctrl-c to cancel adding it
+
+Press enter to continue. The following text (with some variations) will
+be displayed and you will be returned to the command line prompt:
+
+ gpg: keyring `/tmp/tmpixuqu73x/secring.gpg' created
+ gpg: keyring `/tmp/tmpixuqu73x/pubring.gpg' created
+ gpg: requesting key 8842CE5E from hkp server keyserver.ubuntu.com
+ gpg: /tmp/tmpixuqu73x/trustdb.gpg: trustdb created
+ gpg: key 8842CE5E: public key "Launchpad PPA for Bitcoin" imported
+ gpg: no ultimately trusted keys found
+ gpg: Total number processed: 1
+ gpg: imported: 1 (RSA: 1)
+ OK
+
+Type the following line to get the most recent list of packages:
+
+ sudo apt-get update
+
+A large number of lines will be displayed as different update files are
+downloaded. This step may take several minutes on a slow Internet
+connection.
+
+
+*Choose one of the following options*
+
+1. To install the Bitcoin Core Graphical User Interface (GUI), type the
+ following line and proceed to the [Bitcoin Core GUI](#ubuntu-gui)
+ section below:
+
+ sudo apt-get install bitcoin-qt
+
+2. To install the Bitcoin Core daemon (bitcoind), which is useful for
+ programmers and advanced users, type the following line and proceed
+ to the [Bitcoin Core Daemon](#ubuntu-daemon) section below:
+
+ sudo apt-get install bitcoind
+
+3. To install both the GUI and the daemon, type the following line and
+ read both the [GUI instructions](#ubuntu-gui) and the [daemon
+ instructions](#ubuntu-daemon). Note that you can't run both the GUI
+ and the daemon at the same time using the same configuration
+ directory.
+
+ sudo apt-get install bitcoin-qt bitcoind
+
+After choosing what packages to install, you will be asked whether you
+want to proceed. Press enter to continue.
+
+
+#### Bicoin Core GUI {#ubuntu-gui}
+
+To start Bitcoin Core GUI, click the Ubuntu swirl icon to open the Dash,
+type `bitcoin`, and click the Bitcoin icon.
+
+
+
+You will be prompted to choose a directory to store the Bitcoin block
+chain and your wallet. Unless you have a separate partition or drive
+you want to use, click Ok to use the default.
+
+
+
+Bitcoin Core GUI will begin to download the block chain. This
+step will take at least several hours, and it may take a day or more on
+a slow Internet connection or with a slow computer. During the
+download, Bitcoin Core will use a significant part of your connection
+bandwidth. You can stop Bitcoin Core at any time by closing it; it will
+resume from the point where it stopped the next time you start it.
+
+
+
+After download is complete, you may use Bitcoin Core as your wallet or
+you can just let it run to help support the Bitcoin network.
+
+
+*Optional: Start Your Node At Login*
+
+Starting your node automatically each time you login to your computer
+makes it easy for you to contribute to the network. The easiest way
+to do this is to add Bitcoin Core GUI to the list of startup
+applications.
+
+Click the Ubuntu swirl icon to start the Dash, type `startup app`,
+and click the Startup Applications icon.
+
+
+
+In the screen that appears, click the Add button, and enter the
+following information. The `-min` tells Bitcoin Core GUI to start
+minimized (in the tray):
+
+ Name: Bitcoin
+ Command: bitcoin-qt -min
+
+The form should look like this:
+
+
+
+Click Save and then Close to save your changes. The next time you login
+to your desktop, Bitcoin Core GUI will be automatically started in as an
+icon in the tray.
+
+
+
+
+{{moreHelp}}
+
+#### Bicoin Core Daemon {#ubuntu-daemon}
+
+Before using the Bitcoin Core daemon, `bitcoind`, you need to create its
+configuration file with a user name and password. First create the
+`.bitcoin` directory, create (touch) the file, and set the file's
+permissions so that only your user account can read it. From the
+terminal, type:
+
+ mkdir .bitcoin
+ touch .bitcoin/bitcoin.conf
+ chmod 600 .bitcoin/bitcoin.conf
+
+Then you can run the command `bitcoind`. It will print output similar
+to this:
+
+ bitcoind
+ Error: To use the "-server" option, you must set a rpcpassword in the configuration file:
+ /home/bitcoinorg/.bitcoin/bitcoin.conf
+ It is recommended you use the following random password:
+ rpcuser=bitcoinrpc
+ rpcpassword=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
+ (you do not need to remember this password)
+ The username and password MUST NOT be the same.
+ If the file does not exist, create it with owner-readable-only file permissions.
+ It is also recommended to set alertnotify so you are notified of problems;
+ for example: alertnotify=echo %s | mail -s "Bitcoin Alert" admin@foo.com
+
+The "rpcpassword" displayed will be unique for your system. You can
+copy the the rpcuser and rpcpassword lines into your configuration file
+using the following commands. Note that in most Ubuntu terminals, you need
+to press Ctrl-Shift-C to copy and Ctrl-Shift-V to paste because Ctrl-C
+and Ctrl-V have different meanings in a Unix-style terminal.
+
+ echo rpcuser=bitcoinrpc >> .bitcoin/bitcoin.conf
+ echo rpcpassword=XXXXXX >> .bitcoin/bitcoin.conf
+
+(**Warning:** Don't use XXXXXX as your RPC password. Copy the
+rpcpassword displayed by bitcoind for your system.)
+
+Now you can start Bitcoin Core daemon for real. Type the following
+command:
+
+ bitcoind -daemon
+
+It will print a message that Bitcoin Core is starting. To interact with
+Bitcoin Core daemon, you will use the command `bitcoin-cli` (Bitcoin
+command line interface). Note: it may take up to several minutes for
+Bitcoin Core to start, during which it will display the following
+message whenever you use `bitcoin-cli`:
+
+ error: {"code":-28,"message":"Verifying blocks..."}
+
+After it starts, you may find the following commands useful for basic
+interaction with your node:
+[`getblockchaininfo`](/en/developer-reference#getblockchaininfo),
+[`getnetworkinfo`](/en/developer-reference#getnetworkinfo),
+[`getnettotals`](/en/developer-reference#getnettotals),
+[`getwalletinfo`](/en/developer-reference#getwalletinfo),
+[`stop`](/en/developer-reference#stop), and [`help`](/en/developer-reference#help).
+For example, to safely stop your node, run the following command:
+
+ bitcoin-cli stop
+
+A complete list of commands is available in the [Bitcoin.org developer
+reference](/en/developer-reference#rpc-quick-reference).
+
+When Bitcoin Core daemon first starts, it will begin to download the
+block chain. This step will take at least several hours, and it may
+take a day or more on a slow Internet connection or with a slow
+computer. During the download, Bitcoin Core will use a significant part
+of your connection bandwidth. You can stop Bitcoin Core at any time using
+the `stop` command; it will resume from the point where it stopped the next
+time you start it.
+
+
+*Optional: Start Your Node At Boot*
+
+Starting your node automatically each time your computer boots makes it
+easy for you to contribute to the network. The easiest way to do this
+is to start Bitcoin Core daemon from your crontab. To edit your
+crontab, run the following command:
+
+ crontab -e
+
+Scroll to the bottom of the file displayed and add the following line:
+
+ @reboot bitcoind -daemon
+
+Save the file and exit; the updated crontab file will be installed for
+you. Now Bitcoin Core daemon will be automatically started each time
+your reboot your computer.
+
+If you're an Ubuntu expert and want to use an init script instead, see
+[this Upstart
+script](https://github.com/bitcoin/bitcoin/blob/2d782ab2ce30bf106e34cd3288c9082ac04022f9/contrib/init/bitcoind.conf).
+
+
+{{moreHelp}}
+
+
+## Windows Instructions
+
+If you can provide instructions and screenshots for running the latest
+version of Bitcoin Core on Mac OS X, please [open an
+issue](https://github.com/bitcoin/bitcoin.org/issues/new) and we'll tell
+you what we need.
+
+## Mac OS X Instructions
+
+If you can provide instructions and screenshots for running the latest
+version of Bitcoin Core on Mac OS X, please [open an
+issue](https://github.com/bitcoin/bitcoin.org/issues/new) and we'll tell
+you what we need.
+
+
+
+
+
+
+