Preface
Introduction
Practice Setup
Linux Architecture
Basic Commands
Basic file management or operations on file
User administration
Networking
Linux Interview Questions

 

 

uname

Uname is the major command to check the system information. This command can be used with many options.

 

Syntax:

Uname options

 

 

Example-1:

Checking the architecture of the system or machine:

Using the “-m” option with uname command we can figure out the system architecture.

Command execution and sample output is given below,

[root@sys1 ~]# uname -m
x86_64

 

Here, we have shown the command execution from root user but it can also be executed from the normal user.

 

Note: 

There is another command also to display the system architecture.

 

[root@sys1 ~]# arch
x86_64

 

Example-2:

Checking the type of Operating system:

Using “uname –s command” we will display the name of the OS.

[root@sys1 ~]# uname -s
Linux

 

 

Example-3:

Checking the kernel release of the system:

Using uname –r command we will check the release of the os.

[root@sys1 ~]# uname -r
2.6.32-358.el6.x86_64

 

 

Example-4:

Checking the system hostname information:

Using “uname –n” command we will check the hostname of the system.

[root@sys1 ~]# uname -n
sys1.abclearn.com

 

 

Example-5:

Listing out all of the system information at once:

Uname –a is the command to check all the information of the system.

[root@sys1 ~]# uname -a
Linux sys1.abclearn.com 2.6.32-358.el6.x86_64 #1 SMP Tue Jun 29 11:47:41 EST 2016 x86_64 x86_64 x86_64 GNU/Linux

 

“uname” is the command with “-a” option is used to display kernel and processor information of the system.

 

From the above output:
Linux (first column) à represents the operating system

Sys1.ithonours.com(second column) à represents the hostname given.

3.10.0-12 3.el7.x86_64(third column) à kernel version

Later on, represents date & time and last options explain the processor architecture.

 

Topics Summary

Let's assume, we have logged into a machine's terminal windows and want to check below details...