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tldr/pages/linux/dmesg.md
Lena d427f333b2
pages/*: add backticks around I/O streams (#10436) 
* as suggested in #10428
* standard input  => `stdin`
* standard output => `stdout`
* standard error  => `stderr`

Co-authored-by: K.B.Dharun Krishna <kbdharunkrishna@gmail.com>
2023-08-09 10:59:02 +05:30

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dmesg

Write the kernel messages to stdout. More information: https://manned.org/dmesg.

  • Show kernel messages:

dmesg

  • Show kernel error messages:

dmesg --level err

  • Show kernel messages and keep reading new ones, similar to tail -f (available in kernels 3.5.0 and newer):

dmesg -w

  • Show how much physical memory is available on this system:

dmesg | grep -i memory

  • Show kernel messages 1 page at a time:

dmesg | less

  • Show kernel messages with a timestamp (available in kernels 3.5.0 and newer):

dmesg -T

  • Show kernel messages in human-readable form (available in kernels 3.5.0 and newer):

dmesg -H

  • Colorize output (available in kernels 3.5.0 and newer):

dmesg -L