Linux dmesg Command

What is Linux dmesg Command?#

In this tutorial we learn how to use dmesg command in Linux. dmesg command is dmesg - print or control the kernel ring buffer.

dmesg Syntax#

dmesg [options]
dmesg --clear
dmesg --read-clear [options]
dmesg --console-level level
dmesg --console-on
dmesg --console-off

dmesg Examples#

dmesg Command Manual / Help#

We can use man and info command to see the manual page of dmesg command. dmesg command also have --help option to show list of options.

To open man page for dmesg command we can use command below. To exit man or info page you can press q.

man dmesg

To open info page for dmesg command we can use command below.

info dmesg

To open help page from dmesg command we can run command below.

dmesg --help

Linux dmesg Command Source Code#

You can find dmesg command source code from the folowing repositories:

• dmesg source code on GitHub
• util-linux releases on kernel.org

Related Linux Commands#

You can read tutorials of related Linux commands below:

• Linux w Command
• Linux id Command
• Linux who Command

Summary#

In this tutorial we learn how to use dmesg in Linux with practical examples. Visit our Linux Commands guide to learn more about using command line interface in Linux.