Ethereum public network peer
BTC, usdt, ETH, BCH, LTC mean respectively:
1, BTC
bitcoin. The concept was first proposed by Nakamoto in 2009. According to Nakamoto's idea, the open source software is designed and released, and the P2P network is built on it. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system
2, usdt
TEDA currency is a virtual currency that links cryptocurrency with legal currency US dollar, and is a virtual currency kept in foreign exchange reserve account and supported by legal currency
EthEthereum is an open source public blockchain platform with intelligent contract function, which provides decentralized Ethereum virtual machine to process point-to-point contract through its special cryptocurrency ether
4. BCH
bitcoin cash is a new version of bitcoin with different configurations launched by a small number of bitcoin developers
at 20:20 on August 1, 2017, bitcoin cash starts mining, and each bitcoin investor's account will have the same amount of bitcoin cash (BCH)
5, LTC
litecoin, abbreviated as LTC, currency symbol: & # 321;; It is a kind of network currency based on "peer-to-peer" technology. It is also an open source software project under MIT / X11 license. It can help users make instant payments to anyone in the world
source of reference: network bitcoin
source of reference: network TEDA coin
source of reference: network Ethereum
source of reference: network bitcoin cash
source of reference: network letcoin
source of reference: Network
They are:
bitcoin
the concept of bitcoin was first proposed by Nakamoto in 2009. According to Nakamoto's ideas, the open source software was designed and released, and the P2P network was built on it. Bitcoin is a kind of P2P digital currency. Point to point transmission means a decentralized payment system
bitcoin cash
bitcoin cash is a new version of bitcoin with different configurations launched by a small number of bitcoin developers
extended data:
virtual currency refers to non real currency. Well known virtual currency, such as network company's network currency, Tencent company's Q currency, Q point, Shanda company's voucher, Sina's Micro currency (used for micro games, Sina reading, etc.), chivalrous Yuanbao (used for chivalrous road game), silver pattern (used for bixue Qingtian game)
the popular digital currencies in 2013 are bitcoin, Leyte coin, infinite coin, quark coin, zeta coin, BBQ coin, pennies (Internet), invisible gold bar, red coin and prime currency. At present, hundreds of digital currencies are issued all over the world. Popular in the circle & quot; The legend of "bitcoin, Wright silver, infinite copper, pennies aluminum"
description of ifcfg-eth0 configuration parameters in Linux:
ifcfg-eth0 is in / etc / sysconfig / network scripts,
its configuration is as follows:
device = physical device name
IPADDR = IP address
netmask = mask value
Network = network address
broadcast = broadcast address
gateway = gateway address
onboot = [yes | no]
userctl = [yes | no] (whether non root users can control the device)
bootproto = [none | static | BOOTP | DHCP] (boot) No protocol | static allocation | BOOTP protocol | DHCP protocol)
hwaddr = MAC address
some parameters are not required
the original configuration is as follows:
device = eth0
bootproto = DHCP
onboot = yes
in this case, the NIC is not activated
the modified configuration is as follows:
device = eth0
bootproto = static
broadcast = 192.168.129.128
IPADDR = 192.168.129.2
netmask = 255.255.255.0
Network = 192.168.129.0
onboot = yes
in this way, the network card can be activated every time it is turned on.
1: there is no network card driver.
2: you have disabled it.
if it is 2, try sudo ifup eth0 or sudo ifconfig eth0 up.
in addition, there are some configuration errors that can lead to this situation, but it's too much and too troublesome
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