lunes, 24 de agosto de 2020

Top Users Command In Linux Operating System With Descriptive Definitions


Linux is a command line interface and has a graphical interface as well. But the only thing we should know how we interact with Linux tools and applications with the help of command line. This is the basic thing of Linux.  As you can do things manually by simple clicking over the programs just like windows to open an applications. But if you don't have any idea about commands of Linux and definitely you also don't know about the Linux terminal. You cannot explore Linux deeply. Because terminal is the brain of the Linux and you can do everything by using Linux terminal in any Linux distribution. So, if you wanna work over the Linux distro then you should know about the commands as well.
In this blog you will get a content about commands of Linux which are collectively related to the system users. That means if you wanna know any kind of information about the users of the system like username passwords and many more.

id

The "id" command is used in Linux operating system for the sake of getting knowledge about active user id with login and group. There may be different users and you wanna get a particular id of the user who is active at that time so for this you just have to type this command over the terminal.

last

The "last" command is used in Linux operating system to show the information about the last logins on the system. If you forget by which user id you have logged in at last time. So for this information you can search login detail by using this command.

who

The "who" command is used in Linux distributions to display the information about the current user which a an active profile over the Linux operating system. If you are in the system and you don't know about that active user and suddenly you have to know about that user detail so you can get the info by using this command.

groupadd

The "groupadd admin" is the command which is used in Linux operating system to add a group in the Linux system to gave the privileges to that group.

useradd

The "useradd" command is used in Linux operating system to add user or users to a specific group. If you wanna add a user name Umer so for this matter you just have to write a command i.e. useradd -c "Umer".

userdel

The "userdel" command is used in Linux operating system for the purpose to delete any user or users from the particular group present in the linux operating system. For example "userdel Umer" this command will delete the user named Umer.

adduser

The "adduser" command is a simple command used to create directly any user in the system. There is no need to make a group for this. You just have to type the command with user name like adduser Umer, it will created a user by name Umer.

usermod

The "usermod" is a command used in Linux operating system to modify the information of any particular user. You can edit or delete information of any particular user in the Linux operating system.


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How Block Chain Technology Can Help Fight Wuhan Corona Virus Outbreak

As the death toll and the infected cases of widespread coronavirus continue to increase, global organizations and the tech industry has come forward with technology like blockchain to fight coronavirus.

Along with the equipment and monetary support, technology also withstands against the virus with better plans and solutions. Hence, tech industries have started leveraging blockchain technology in the wake of a global health emergency.

Blockchain Helps In Real-Time Online Tracking

The Center for Systems Science and Engineering has already set up an online platform to track coronavirus and visualize the growing number of infected patients in real-time.

But Acoer, an Atlanta-based blockchain app developer, has also launched an alternative online data visualization tool to easily trail and depict the Cororanvirus outbreak using blockchain technology.

Acoer platform, named HashLog, is more advanced and clear as it pulls the data from the Hedera Hashgraph database using the HashLog data visualization engine.

Hedera Hashgraph is an immutable, transparent and decentralized database based on distributed ledger technology that provides synchronized and unchangeable data from the public networks.

Moreover, researchers, scientists, and journalists can use the HashLog dashboard to understand the spread of the virus and act against it swiftly.

For data sources, Johns Hopkins CSSE extracts data from WHO, CDC, ECDC, NHC, and DXY. On the other hand, Acoer maps the public data, including data from the Center for Disease Control (CDC) and the World Health Organization (WHO). Therefore, data may differ on both platforms.

(left) CSSA and Acoer (right)

Blockchain Can Help Monitor And Control Money Flow

To fight the further spread of the coronavirus (2019-nCoV) outbreak globally, China has also received abundant monetary support from the international community to create better action plans.

China's govt-led organization and charities are responsible for overseeing and utilizing the influx of money to research and generate a solution for coronavirus. But due to the lack of coordination and mismanagement among the various organization, money is not being laid out to curb the crisis.

Recently, a paper published by Syren Johnstone, from the University of Hong Kong, discusses the problems encountered by charities, in China and elsewhere. It argues that the present crisis should be seen as a call to arms.

Syren urges for a borderless solution with better management of donations and implementation using the emerging tech like Blockchain and Artificial Intelligence.

Keeping that in mind, Hyperchain, a Chinese company, also announced blockchain-based charity platform to streamline the donation from all over the world.

Since the Hyperchain platform is based on the blockchain, it offers more transparency among the sender and receiver of funds to bring trust and immutability to restrict the transaction data deletion.

Overall, Hyperchain improves administrative function for the money and also extends the logistics actions.

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