The store of digital currency
Luohu's Mixc, China Resources Vanguard, Meiyijia convenience store, Tianhong Department store, Maoye department store and other supermarket department stores; Noodle King, Taixing restaurant, food first and other restaurants; digital currency can be used in Junyue Hotel, Shenzhen book city, huaguoxian, gas station, subway recharge machine and other living service places
there are 3389 merchants in Luohu District of Shenzhen who have completed the transformation of digital RMB system, and they can use digital currency in these shops
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advantages of digital currency:
1. Save cost and improve efficiency
in the traditional electronic payment process, funds are stored in the third-party platform. The third-party platform deposits funds through the time difference of payment to obtain short-term interest income, which makes customers and businesses suffer losses, and the transaction process has two capital transfers, which makes the transaction process rendant. Electronic payment based on blockchain technology eliminates the third-party platform and realizes peer-to-peer payment (P2P), which simplifies the payment process and reces the payment cost
2. Optimize the traditional payment function
digital currency can inherit the advantages of cash payment (point-to-point payment, instant payment and settlement, convenient and fast), and solve the defects of cash at the same time. In this condition, controllable anonymity can be realized at the same time. That is to say, compared with traditional mobile payment, digital signature is used to effectively protect the personal information of each participant, so as to prevent the loss, leakage or malicious tampering of the user's personal information
3. Control the whole life cycle of currency and control the return of currency
The economist Stiglitz studies the macroeconomic management of e-money system, and points out that the electronization and digitalization of money will help to improve the ability of central bank to monitor money flow and organize market, and improve the effectiveness of monetary policy. More importantly, legal digital currency will create a new price based monetary policy tool, which can break the zero interest rate lower limit and release monetary policy space Digital currency does not rely on physical outlets and labor services, and has low cost of infrastructure and human resources. It can obtain a larger service capacity with less material and human input, which is concive to the expansion of financial services in remote and poor areas. Moreover, financial services based on digital currency have the characteristics of small amount and convenience, such as "massive transactions, small and micro single amount", which create conditions for the general public to facilitate life and increase employmentThis is a Linux system IP address configuration command. The specific meaning is:
set the IP address of the system to 192.168.0.2; The subnet mask is 24, that is 255.255.255.0; The broadcast address is 192.168.0.255; The name of NIC device is eth0
all computers in the network must set a unique IP address to communicate normally. Because of this unique address, users can select the objects they need from thousands of computers efficiently and conveniently when they operate on networked computers
The IP address is just like our home address. If you want to write to a person, you need to know his or her address so that the postman can deliver the letter. A computer sending information is like a postman. It must know the only "home address" to avoid sending the letter to the wrong person. But our address is expressed in words, the address of the computer is expressed in binary numbers eth0 is the name set by the system for the network card. If there are al network cards or multiple network cards, there will be names like eth1 and eth2. The name can be set artificially. It is the unique name of the network card in the current computer system
first check the local public key:
$CD - /. SSH
if you prompt: no such file or directory, it means that you are using git for the first time. If it is not the first time to use it, please perform the following operation to clean up the original SSH key< br />$ mkdir key_ backup$ cp id_ rsa* key_ backup$ rm id_ RSA *
generate a new key:
$SSH keygen - t RSA - C "your email address"
in the carriage return, you will be prompted to enter a password, which will be used when you submit the project. If it is empty, you do not need to enter it when you submit the project
you can find one in your user folder under your local system disk. SSH file, where the ID_ The SSH key just generated is stored in the rsa.pub file
2. Add public key
log in to the code platform, enter the user's "account settings", click "SSH public key management" in the right column, click "add public key", fill in the newly generated public key in the "public key" column, give it a name, and save it
note: when ing the public key, do not the extra spaces, otherwise it may not be added successfully
I came across a project: sometimes, it needs to be generated by you. Under SSH directory, create a new config file and write user XXX
3. Manage public key
you can also delete or modify the public key in "account settings" - SSH public key management.