Today, the operating systems of the family GNU / Linux are used in IT everywhere. From managing servers in data centers (DPCs) and data centers to working on embedded devices. From managing smartphones and routers to performing specific calculations. At the same time, in 2023, working with Linux also means working with network technologies. Today we will tell you how to find out IP and other network information - this is included in the basic Linux courses download torrent Tallinn.
How to find out IP addresses of all network interfaces of the system, Linux courses download torrent Tallinn
Before anything else, let's look at the simplest example - outputting general network information to the command line. Namely - IP addresses all network interfaces registered in the system. It is worth noting that this information is included in our Linux System Administration Courses Tallinn. And it is guaranteed to be useful to you when applying for a job and directly in solving work tasks.
But first, let's explain what a network interface is. First of all, this term refers to a separate network adapter for a device. And also to separate connection points between a computer and a private or public network. As a result, for example, a laptop will have a cable connection via one interface, while a connection via WiFi - through another. And through 4G modem в USB port - through the third.
To display detailed information about all network interfaces in the system, including their IP addresses. The user only needs to enter one of the following commands into the command line:
- ip address show;
- ip addr show;
- ip addr sh;
- ip addr;
- ip a.
It is worth noting that the specific version of the command depends on the Linux distribution and its version. However, in most modern operating systems, they will lead to the same result. In OS based on Ubuntu just enter the command hostname -I. Which will only bring out IP Address device.
Of course, a system administrator and a specialist in programmable networks and systems should know all the commands listed above. And also be able to use them to obtain information about the network devices of the system.
How to find the IP address of a specific network interface in Linux
Most likely, every specialist sooner or later may need to see IP Address specific interface. First of all, so as not to clutter the output with unnecessary information. And to get exactly the data that is needed for work right now. We recommend going through Astra Linux courses Tallinnto master working with this family of OS.
To display network information about a specific interface, simply add to the command ip a sh / ip address show / ip addr sh interface name. It is worth noting that with commands without sh / show this trick won't work. For example, it could be the name ens33, but you will have your own. In this case, only one interface will be shown from all the interfaces - the one corresponding to the name.
How to view network route table in linux
It may also be useful for users and system administrators to see the OS routing table. This table includes data on all network connection routes of the system. To display it in distributions based on Debian/Ubuntu и RHEL / CentOS just enter the command road. with option -nAs a result, you will receive the following information:
- IP addresses appointments;
- gateways;
- masks;
- interfaces, etc.
However, in some Linux systems this command will not work (for example, in openSUSE). In this case, you should use the ip route command. To learn more, we recommend you go to Linux course from scratch Tallinn on the platform SEDICOMM UniversityMoreover, this can be done in just a few months in a convenient online format.
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