Linux 显示系统信息的命令

1. Kernel name

To reveal the kernel name, you can use -s parameter.

# uname -s

Linux

The output will be same with uname without parameter.

2. Kernel release

If you need to know what kernel release you’re using, just use -r parameter

# uname -r

2.6.18-371.1.2.el5

3. Kernel version

Beside kernel information, uname can also fetch the kernel version. Use -v parameter for this purpose

# uname -v

#1 SMP Tue Oct 22 12:57:43 EDT 2013

4. Nodename

Parameter -n will give you the node hostname. For example, if your hostname is “dev-machine”, -nparameter will print dev-machine as the output of -n parameter

# uname -n

dev-machine

For RedHat and CentOS, you can also use /etc/redhat_release file :

# cat /etc/redhat_release

CentOS release 5.10 (Final)

For non-RedHat based distro, you may use /etc/issue. Here's the example :

# cat /etc/issue

Linux Mint Olivia \n \l

5. Hardware name

If you are wondering what kind of machine you’re using, you can try -m parameter. It will show you information about it.

# uname -m

i686

i686 is indicates that your system is 32 bit operating system. While x86_64 means your system is a 64 bit system.

6. Hardware platform

Similar with hardware name, -i parameter will show you hardware platfrom.

# uname -i

i386

i386 mean you are running a 32 bit system. If the output is x86_64 it’s mean that you are running 64 bis system.

7. Processor type

To see processor type, you can use -p parameter. If uname is not able to show you that information, it will show you ‘unknown’ in the output.

# uname -p

i686

8. Operating system

Uname can also used to reveal what operating system you are running. Use -o parameter to fulfill this purpose.

# uname -o

GNU/Linux

9. All information

There is one parameter that can reveal all information. It’s -a parameter. It will show you all information except omit -i and -p if they are unknown.

# 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

That's the uname command in use. Please stay tuned to see more commands.

Thank you.