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How to divide Ethereum test network address and main network add

Publish: 2021-05-05 13:06:33
1. Ethereum wallet address is your bank card number. If you forget the address, you can use the private key, mnemonic words and keystore + password to import the wallet and retrieve it. Buying and selling Ethereum is even easier. You can open an account with $100 in the realm Kingdom, and then analyze the price. Buying up or down means buying in the right direction is profitable.
2. How many account addresses can an Ethereum node have at most
A: generally, there is only one account address, otherwise there will be an error! blockchain itself is unique. If there are multiple account addresses on one node, it violates the fundamental principle of blockchain!
3. Where are you going? Wallet or exchange
transfer eth, as long as there is an address, you can transfer it out
mnemonic words are things that you can help to find when you forget your key, not related to money collection.
4. The withdrawal of digital currency generally only occurs on the digital currency trading platform. Where to withdraw cash? It is suggested to check the account number of the accounting platform carefully. It is generally in the personal center. The specific situation still needs to consult the official personnel, and the answer given by the official shall prevail. However, when choosing a digital currency trading platform, it is better to choose a big platform such as Xigu digital asset trading platform and bitcoin China.
5. Confinement is a thing that must be done after childbirth. If you don't take delivery, the maternal body will leave the root of the disease after pregnancy, which is difficult to cure. Pregnant women can choose to take delivery at home or in the delivery center

first of all, confinement is usually for one month. So whether at home or in the confinement center is the same, it needs to live for a month. But this time is not certain, can only be said to be at least a month's time to live. A month is a minimum time, even if the maternal recovery is fast, but also to live enough for a month. But if the maternal recovery is relatively slow, then it is not only to live for a month, it is necessary to live longer. Therefore, it is more recommended that pregnant women take delivery at home, which is more convenient and comfortable<

secondly, confinement is the key period for a newborn baby to recover. During this period, it is necessary to take good care of the baby. The time of each confinement is different, but it is generally 30 days or 42 days, so the body will recover more completely

in the end, the place to take delivery of the baby must choose a better place, a place with more complete facilities and better service. Otherwise, if the pregnant woman goes to the delivery center and no one is in charge, the delivery of the baby will be greatly reced

pay attention to diet after childbirth:

women have higher requirements for diet when they are in confinement, and many women think that there are not so many restrictions after childbirth, but as long as women are still in lactation, there are still many things to pay attention to

1. During lactation, women should not eat food with milk returning function, such as leek, malt, etc. Many women think ginseng tonic body is very effective, but ginseng will make maternal milk, in breast-feeding, it is best not to eat. In addition, more estrogen content of food is also easy to cause milk, such as pigeons, hens and so on

2. Women should not eat caffeinated food ring lactation. Caffeine can stimulate the nervous system. It is likely to enter the child's body through milk, causing damage to the child's nervous system and heart, and also causing indigestion

3. Eat less salt and monosodium glutamate, too much salt will increase the burden on the kidney. And monosodium glutamate will affect the development of children, eat too much monosodium glutamate will make children appear mental retardation, growth retardation and so on

women should not only pay attention to their diet when they are in confinement, even when they are out of confinement, as long as they are still in the lactation period, they can not do whatever they want in their diet, so as not to have adverse effects on their children.
6.

This question is very strange. I recommend you to see the introction of professional media

7. Highlights
the Ministry of Ecation said that it will increase investment in art ecation this year and hold a National School Aesthetic Ecation Conference on the 21st< In recent years, Zhejiang, Anhui, Guangdong and other provinces have launched provincial environmental supervision, focusing on thermal power, steel, cement, glass, waste incineration and other instries
the Hang Seng ah premium index closed at 122.58, a new low in the last 10 months. Analysts believe that the ah share price gap will further narrow with the expansion of interconnection< It is estimated that the global gold demand and supply will rise by 1.5% and 0.5% respectively this year, and the gold price will break through in the second half of this year
04
major events
- the first digital China Construction Summit is about to be held in Hainan. We need to implement the strategy of
among the listed companies, gaoweida (300465) acquired 100% equity of Hainan nut creative Entertainment Information Technology Co., Ltd., which used big data analysis technology to build a mobile advertising platform characterized by hardware. Aofei data (300738) is the core provider of IDC (Internet Data Center Service), and Haikou Jinlu data center is under construction
● Alibaba's first shopping center will be opened soon, and the online and offline shopping centers will be fully integrated
the third phase of qinchengli shopping center in Hangzhou Xixi park will be officially opened on April 28. This is the first shopping center of Ali's new retail, which records consumers' purchase preferences through collection and storage. At the same time, Ali will implement new technologies such as "face brushing consumption", "zero burden shopping", "ar shopping guide" and "thousands of people and thousands of noodles" magic fitting in this project, so as to realize a new mode of online integration and offline (Omo), All brands of the shopping center are jointly operated online and offline to explore new retail brands of the Internet
comments: among the listed companies, Nan property (603506) qinchengli is the first commercial project of "light asset export management". Visionary (002841) has become the first hardware service provider of Alibaba new retail, jointly building the landing ecology of smart stores. Dashi intelligence (002421) has cooperation with ALI Alipay.
> Internet plus medical health policy will fall to the ground, and the demand for hospital information will rise
comment: electronic medical records, medical technology, information platform, grading treatment system, and big data analysis, cloud platforms and other high grade procts demand began to rise. Neusoft group (600718), Weining health (300253) and other listed companies have won relevant software projects in hospitals< More than 10 billion yuan of integrated circuit projects are contracted intensively, and consumables and equipment are the key points.
comments: there is a big gap between China and foreign advanced level in the field of semiconctor equipment and materials. With the proction of wafer factories, it is an inevitable trend to localize supporting semiconctor materials. We are optimistic about Jingrui (300655) and jianghuawei (603078), which are mainly engaged in wet electronic chemicals, And Shanghai Xinyang (300236) and other companies that have been invested by large funds<
05
policies and instries point to hot spots
Hainan explores and develops competitive sports lottery
mining Hainan lottery stocks: Aijian group (600643), Xinhualian (000620)
Hainan needs to implement big data strategy as a whole
Hainan big data concept stocks: aofei data (300738), gaoweida (300465)
Ali's first shopping center is about to open, Full integration of online and offline
Alibaba's new retail concept stocks: Nan property (603506), Shiyuan shares (002841), Dashi intelligent (002421)
- Alibaba is about to release its cloud communication procts
cloud communication concept stocks: Beiwei Technology (002148), mengwang group (002123), 263 (002467), etc Tianji Technology (300245)
panel manufacturers speed up the layout of 8K screen
8K screen concept stocks: precision electronics (300567), East China Technology (000727), BOE a (000725), shentianma a (000050)
indivial stock gold rush
> Huarui shares (300626) annual net profit increased by 44% year on year, and it is planned to transfer 10 shares to 8 shares and send 1 yuan< According to the information development (300469) annual report, it is planned to pay 1 yuan for 10 transfers and 8 transfers< The annual net profit of Shandong mining machinery (002526) increased by 567% year-on-year, and it is planned to turn 10 to 7< The annual net profit of Jianfa shares (600153) increased by 17%, and the holding of securities fund increased to 4.9% from 3.61% at the end of last three quarters
> Huayu automobile (600741) participated in the IPO of Yap automobile, and the company's shareholding accounted for 33.90% of the total share capital of Yap automobile before the IPO
> Tengda construction (600512) won the bid of 1.17 billion yuan civil construction project, accounting for 32.6% of the revenue in 2017
07
comments on leading stocks
Desheng technology-002908
comments: moreover, this vote resonates with the index in time sharing, which also belongs to the different to consistent seal back, so it is inevitable to enjoy the premium. The current objective disk situation, the strongest main line is undoubtedly Hainan, but not how to give opportunities. Digital China is an auxiliary line for diverting funds, which resonates with the index at the end of the day, but it is difficult to judge whether to take advantage of the situation or build up the momentum. It still depends on the situation.
8. 如何快速辨别网卡ID与物理网卡的对应关系
一般购买的服务器都有4个网卡,这个时候在安装好服务器后,配置IP的时候就郁闷了
如是一个浪潮8560M2服务器安装Redhat后的网卡显示:
[root@DBSERVER51 ~]# ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:E0:ED:2D:0F:58
inet addr:192.168.4.10 Bcast:192.168.4.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:40428 errors:0 dropped:0 overruns:0 frame:0
TX packets:392 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:3413500 (3.2 MiB) TX bytes:44521 (43.4 KiB)
Memory:faee0000-faf00000

eth1 Link encap:Ethernet HWaddr 00:E0:ED:2D:0F:59
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Memory:fae60000-fae80000

eth2 Link encap:Ethernet HWaddr 00:25:90:5A:15:B6
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Memory:fafe0000-fb000000

eth3 Link encap:Ethernet HWaddr 00:25:90:5A:15:B7
BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Memory:faf60000-faf80000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:10 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:660 (660.0 b) TX bytes:660 (660.0 b)
从一个机房搬下来时,忘记标记了这个时候还是想修改eth0作为通信口但是一个一个插拔比较麻烦,于是就想能不能有个好办法,毕竟Linux不像Windows那样直观,打开网络连接就可以看到这个时候就要用到ethtool这样一个命令,命令详解如下:
命令描述:
ethtool 是用于查询及设置网卡参数的命令
ethX是以太网卡的名称,Linux系统将检测到的第一块以太网卡命名为eth0, 第二块为eth1,…….
使用概要:
ethtool ethx //查询ethx网口基本设置,其中 x 是对应网卡的编号,如eth0、eth1等等
ethtool –h //显示ethtool的命令帮助(help)
ethtool –i ethX //查询ethX网口的相关信息
ethtool –d ethX //查询ethX网口注册性信息
ethtool –r ethX //重置ethX网口到自适应模式
ethtool –S ethX //查询ethX网口收发包统计
ethtool –s ethX [speed 10|100|1000] [plex half|full] [autoneg on|off] //设置网口速率10/100/1000M、设置网口半/全双工、设置网口是否自协商
ethtool [ -a | -c | -g | -i | -d | -k | -r | -S |] ethX
ethtool [-A] ethX [autoneg on|off] [rx on|off] [tx on|off]
ethtool [-C] ethX [adaptive-rx on|off] [adaptive-tx on|off] [rx-usecs N] [rx-frames N] [rx-usecs-irq N] [rx-frames-irq N] [tx-usecs N] [tx-frames N] [tx-usecs-irq N] [tx-frames-irq N] [stats-block-usecs N][pkt-rate-low N][rx-usecs-low N] [rx-frames-low N] [tx-usecs-low N] [tx-frames-lowN] [pkt-rate-high N] [rx-usecs-high N] [rx-frames-high N] [tx-usecs-high N] [tx-frames-high N] [sample-interval N]
ethtool [-G] ethX [rx N] [rx-mini N] [rx-jumbo N] [tx N]
ethtool [-e] ethX [raw on|off] [offset N] [length N]
ethtool [-E] ethX [magic N] [offset N] [value N]
ethtool [-K] ethX [rx on|off] [tx on|off] [sg on|off] [tso on|off]
ethtool [-p] ethX [N]
ethtool [-t] ethX [offline|online]
ethtool [-s] ethX [speed 10|100|1000] [plex half|full] [autoneg on|off] [port tp|aui|bnc|mii] [phyad N] [xcvr internal|external]
[wol p|u|m|b|a|g|s|d...] [sopass xx:yy:zz:aa:bb:cc] [msglvl N]
标志
-a 查看网卡中 接收模块RX、发送模块TX和Autonegotiate模块的状态:启动on 或 停用off
-A 修改网卡中 接收模块RX、发送模块TX和Autonegotiate模块的状态:启动on 或 停用off
-c display the Coalesce information of the specified ethernet card
-C Change the Coalesce setting of the specified ethernet card
-g Display the rx/tx ring parameter information of the specified ethernet card
-G change the rx/tx ring setting of the specified ethernet card
-i 显示网卡驱动的信息,如驱动的名称、版本等
-d 显示register mp信息, 部分网卡驱动不支持该选项
-e 显示EEPROM mp信息,部分网卡驱动不支持该选项
-E 修改网卡EEPROM byte
-k 显示网卡Offload参数的状态:on 或 off,包括rx-checksumming、tx-checksumming等
-K 修改网卡Offload参数的状态
-p 用于区别不同ethX对应网卡的物理位置,常用的方法是使网卡port上的led不断的闪N指示了网卡闪的持续时间,以秒为单位
-r 如果auto-negotiation模块的状态为on,则restarts auto-negotiation
-S 显示NIC- and driver-specific 的统计参数,如网卡接收/发送的字节数、接收/发送的广播包个数等
-t 让网卡执行自我检测,有两种模式:offline or online
-s 修改网卡的部分配置,包括网卡速度、单工/全双工模式、mac地址等
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