Explore the uname command in Linux systems

Linux is a free, open source operating system that is widely used in various computer systems. In Linux, there is a very useful command called uname. It allows users to quickly obtain basic information about the system, such as operating system type, kernel version, host name, etc. Whether on the server side or on a personal computer, the uname command is very useful. This article will lead readers to delve into the uname command in Linux systems, giving you a deeper understanding of Linux systems.

People who are familiar with graphical operating systems usually use the mouse to view system information. However, in graphical Linux systems, when you are in console mode, you cannot obtain operating system information through "right mouse button > About". At this time, under Linux, you can use the uname command to help you complete these tasks. Uname is the abbreviation of unix name. To actually use it in the console just type uname.

When you enter uname without parameters, it only displays the name of your operating system.

# uname

Linux

1. Kernel name

You can use the -s parameter to display the kernel name. (Annotation: You can run this command on other Unix-like systems to see, for example, mac will display Darwin)

# uname -s

Linux

The output information will be the same as that output by uname without parameters.

2. Kernel distribution

If you want to know which kernel distribution you are using (referring to different kernel packaging versions), you can use the -r parameter

# uname -r

2.6.18-371.1.2.el5

3. Kernel version

In addition to some kernel information, you can also use the -v parameter uname to obtain more detailed kernel version information (Annotation: not the version number, it refers to the time when the kernel was created and the CPU architecture, etc.).

# uname -v

#1 SMP Tue Oct 22 12:57:43 EDT 2013

4. Node name

The -n parameter will provide you with the hostname of the node. For example, if your hostname is "dev-machine", the -n parameter will print the hostname.

# uname -n

dev-machine

For RedHat and CentOS users, you can also view it through the /etc/redhat_release file:

# cat /etc/redhat_release

CentOS release 5.10 (Final)

If it is not a RedHat-based distribution, you can check the /etc/issue file. It is similar to the following:

# cat /etc/issue

Linux Mint Olivia \n \l:

5.Hardware name

If you want to know what type of machine you are using, you can try the -m parameter. It will tell you information about the hardware.

# uname -m

i686

i686 indicates that you are using a 32-bit operating system, and if it is X86_64, it indicates that you are using a 64-bit system.

6. Hardware platform

Similar to the hardware name, the -i parameter will display your hardware platform (Annotation: the hardware name i686 belongs to the hardware platform i386 series).

# uname -i

i386

Similarly, i386 means that you are running a 32-bit system. If the output is X86_64, it means that you are running a 64-bit system.

7. Processor type

You can use the -p parameter to view the processor type. If uname is not recognized, it will display 'unknown' as output.

# uname -p

i686

8. Operating system

uname can also reveal information about the operating system you are running. Use the -o parameter to achieve this purpose.

# uname -o

GNU/Linux

9. All information

There is a parameter that can display all information! This is the -a parameter, which displays all information. If -i and -p output are unknown they are omitted by default.

# uname -a

Linux dev-machine 2.6.18-371.1.2.el5 #1 SMP Tue Oct 22 12:57:43 EDT 2013 i686 i686 i386 GNU/Linux

In short, the uname command is a very practical tool in the Linux system, which allows us to quickly understand the basic information of the system. Through the introduction of this article, I believe that everyone has a deeper understanding of the uname command. In daily work, we can manage and maintain the system based on the information output by the uname command. At the same time, we must continue to learn and explore to make ourselves more proficient and confident in the open source world of Linux.

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