DOT-Files/Gentoo/gentooamd/home/user/.tldrc/tldr/pages/linux/dmesg.md

dmesg

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

• Show kernel messages:

sudo dmesg

• Show kernel messages in human-readable format (equivalent of dmesg --color --reltime piped to a pager):

sudo dmesg {{[-H|--human]}}

• Show kernel error messages:

sudo dmesg {{[-l|--level]}} err

• Show kernel messages and keep [w]aiting for new ones (similar to tail --follow):

sudo dmesg {{[-w|--follow]}}

• Show kernel messages emitted in the last hour:

sudo dmesg --since "1 hour ago"

• Show kernel messages with timestamps as differences from local time:

sudo dmesg {{[-e|--reltime]}}

• Show kernel messages with a timestamp for each message:

sudo dmesg {{[-T|--ctime]}}

• Colorize output:

sudo dmesg {{[-L|--color]}}