Getting information on a running Linux kernel

Getting details of Linux kernel.

We can use command uname with various options to get complete details of running kernel.

uname -a Linux df1-ws-5084 4.4.0-64-generic #85-Ubuntu SMP Mon Feb 20 11:50:30 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

As per man page here few more options

Usage: uname [OPTION]… Print certain system information. With no OPTION, same as -s.

-a, —all print all information, in the following order, except omit -p and -i if unknown: -s, —kernel-name print the kernel name -n, —nodename print the network node hostname -r, —kernel-release print the kernel release -v, —kernel-version print the kernel version -m, —machine print the machine hardware name -p, —processor print the processor type (non-portable) -i, —hardware-platform print the hardware platform (non-portable) -o, —operating-system print the operating system —help display this help and exit —version output version information and exit

All information

Using the -a/—all flag will print all the available information about the kernel.

$uname -a
Linux hostname 3.13.0-88-generic #135-Ubuntu SMP Wed Jun 8 21:10:42 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

In this example, we see the kernel name, the hostname, the kernel release number, the kernel version, the machine hardware name, the processor type, the hardware platform , and the operating system name.

Any of those fields can be queried individually using other flags.