![]() If you want your team to use Ubuntu 5.15.46 or a later version, enter, for example, 5.15.46 in the Device Security Posture Monitor Operating system version field. In 5.15.0-47.51-generic 5.15.46, the last three numbers 5.15.46 is the mainline kernel version number. Run the command $ cat /proc/version_signature to find the version number. The version number also depends on the distribution you’re using. The Linux version number is the mainline kernel version and follows the format of. I hope this post adds some insight into what all those numbers and designations represent.What is an operating system version number?Ī version number is a unique set of numbers representing the specific release of an operating system. There are many commands on Linux to help you get information on the kernel that your system is using. $ sudo dpkg -l | grep linux-headers | grep ii | awk '' Notice that in the output shown below, we see both the current and prior kernel versions. The dpkg command can also be used to identify the kernel version. media: Linux media interface: v0.10 Linux video capture interface: v2.00 usb usb2: Manufacturer: Linux 4.15.0-30-generic ehci_hcd usb usb1: Manufacturer: Linux 4.15.0-30-generic ehci_hcd You can also extract kernel information from your dmesg output: On some systems, you can use the rpm command as shown below to provide information on your kernel. We also see some of the other information that the uname command provided. In the following command, we see the Linux distribution name along with the kernel name. GNU/Linux –- the operating system (distribution name not included) #32-Ubuntu SMP –- the number of times this version of the kernel was compiled Thu Jul 26 17:42: –- the last time the kernel was compiled (timestamp) x86_64 –- the machine architecture x86_64 –- the processor architecture x86_64 –- the OS architecture The compilation stats shown on the right in the top line of the output above also tells you some interesting things. | | +- kernel version +- compilation stats To add the the kernel's name, add the "s" switch: OK, so the kernel in this case is "4.15.0-30-generic," and each portion of the name provides some detail on the kernel's identity. ![]() The output is wrapped around below to make it easy to label the fields. Notice that the third field shows the same information we see above. In the display below, each of the fields is explained. If you use, the uname -a command instead, you will get quite a bit more information. ![]() In the first display above, you can see that each field has been annotated. | | | | +- the distribution-specific stringĪdd an "s" and your output will include the kernel's name: It provides a succinct answer to your question but in a format that also includes a number of fields each which provides a particular piece of information. The simplest and most straight-forward command for providing information on your kernel is the uname -r command. How much can your Linux system tell you about the kernel it's running and what commands are available to help you ask? Let's run through some of them. What can your Linux system tell you about the Linux kernel it's using? Let's do a little probing and see.
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