How to install Ethereum without networking

1. Ethereum is a new and open blockchain platform, which allows anyone to build and use decentralized applications running through blockchain technology in the platform
just like bitcoin, Ethereum is neither controlled nor owned by anyone - it is an open source project created by many people around the world. Different from bitcoin protocol, Ethereum's design is very flexible and adaptable. It is very easy to create new applications on the Ethereum platform. With the release of homestead, anyone can use the applications on this platform safely
Ethereum is a programmable blockchain. It does not give users a series of preset operations, but allows users to create complex operations according to their own wishes. In this way, it can be used as a platform for many types of decentralized blockchain applications
in a narrow sense, Ethereum refers to a series of protocols that define a decentralized application platform. The core of Ethereum is Ethereum virtual machine (EVM), which can encode any complex algorithm. In computer science terminology, Ethereum is "Turing complete.". Developers can use the existing JavaScript and python as the model of other friendly programming languages to create applications running on the Ethereum simulator.

2.

Miner components include CPU, GPU, motherboard and hard disk, similar to a high configuration computer with a hard disk. Self assembly mainly depends on which aspect of hardware performance you want to highlight

mining machine has computing power, display card mining machine and storage mining machine. Daotong storage has long been concerned about the dynamic and hardware supply of mining machine, and its own components will be cheaper than those of the manufacturer< br />

3. According to the requirements of the manual, first measure whether the red and green lines correspond to the L1 of the interface; Is the yellow and black line corresponding to L2? If so, it must be the correct connection. Although the telephone line can be divided into positive and negative poles, the terminals can be connected at will, so there is a rectifier directional circuit inside the telephone. Even if the L1 and L2 lines are wrongly connected, the equipment will not be burnt out, so you can safely and boldly test.

4. It's a long story about the difference between 32-bit and 64 bit systems. First of all, let's understand the architecture technology of CPU. Usually we can see that there are x86 and x64 marks on computer hardware. In fact, these are two different CPU hardware architectures. X86 stands for 32-bit operating system and x64 stands for 64 bit operating system. So what does the "bit" in 32-bit and 64 bit mean? Compared with 32-bit technology, this bit of 64 bit technology means that the data width of cpugprs (general purpose registers) is 64 bits. The 64 bit instruction set is the instruction that runs 64 bit data, that is, the processor can run 64 bit data at a time. Let's take a simple but not particularly accurate example: the 32-bit throughput is 1m, while the 64 bit throughput is 2m< First, download a ghost version of win7 operating system, and now Doudou takes "deep technology ghost win7 SP1 x64 computer city installed version v2013.10" as a demonstration.

5.

How to use the Linux system mining, to use the service of the HA Yu miner, only need two steps, you can mine on the Linux system

1. open the website, input the mobile phone number, select how many CPUs you want to use for mining, the default is to use 50% of the CPU for mining, click to generate your exclusive command and



in two steps, you can mine on Linux system, the money you dig only needs to go to the website of hayu miner, enter your mobile phone number to withdraw< br />

6. My computer - & gt; Attribute - & gt; Advanced - & gt; Environment variables - & gt; Add the following environment variables to the system variables:
java_ The home value is: the directory where JDK is installed, and mine is C: &# 92; Program Files\ Java\ jdk1.6.0_ 34
the classpath value is:;% JAVA_ HOME%\ lib\ tools.jar;% JAVA_ HOME%\ lib\ dt.jar;% JAVA_ HOME%\ bin;( Pay attention to the & quot& quot; To add)
Path: append at the beginning.;% JAVA_ HOME%\ bin;% JAVA_ HOME%\ jre\ bin;( Pay attention to the & quot& quot; To add)

after the installation, you can check whether the JDK is installed successfully. Open the CMD window and enter Java – version to view the version information of JDK.

7. Let me tell you the steps. First of all, make sure your hardware connection is OK
1. Make sure the eth0 status is up, sudo ifconfig eth0 up
2. Configure IP, sudo ifconfig eth0 x.x.x
3. Add default gw x.x.x (your route)
4. Set DNS, edit / etc / resolv.conf file, and change the content to nameserver x.x.x.x
5 Restart the network instead of restarting the machine. Sudo / etc / init.d/networking restart

if you are in FC environment, you may be prompted that ifconfig cannot be found, just change to / SBIN / ifconfig

8. Yes,
check the network configuration

$ifconfig
configure the DHCP client $sudo VI / etc / network / interfaces to join Iface eth0 INET DHCP

configure the static IP address $sudo VI / etc / network / interfaceseth0 as follows: Auto eth0address 192.168.0.88netmask 255.255.255.0gateway 192.168.0.1

make the new configuration take effect, save and exit, Use the restart networking command to make the new configuration take effect: $sudo / etc / init.d/networking restart can also restart the network card to make the new configuration take effect. The advantage is that it does not affect other network interfaces: $sudo ifdown eth0 $sudo ifup eth0
temporarily change the IP address
$sudo ifconfig eth0 192.168.1.111 netmask 255.255.255.0 when the system is restarted, After that, the configuration in interfaces is restored
there are two ways to set the default gateway: 1. Set it in the interfaces file$ Sudo VI / etc / network / interfaces adds gateway under the relevant configuration of eth0, such as: Auto eth0iface eth0 INET static address 192.168.1.123netmask 255.255.255.0gateway 192.168.1.1

2. Directly set with command:
$sudo route del default gw manually configure default gateway $sudo route add default gw 192.168.1.1 view route information $route use this method, The modification will take effect immediately. After restarting, the settings in the interfaces file will be valid
view the host name $hosts
temporarily modify the host name $sudo host name. After the TestServer executes the command, it will take effect immediately
permanently modify the host name
$sudo VI / etc / host name and write the new host name. When the system restarts, the host name in this file will be read out
to configure the addresses of DNS servers, you can use up to three DNS servers $sudo VI / etc / resolv.confnameserver 202.xx.xx.xxnameserver 192.168.1.1. The modification of "resolv. Conf" is effective immediately. You can use the NSLOOKUP command to query the DNS server to verify the "resolv. Conf" configuration file.