2017-07-24 14:02:58 -05:00
|
|
|
# dmesg
|
|
|
|
|
|
2023-08-09 07:29:02 +02:00
|
|
|
> Write the kernel messages to `stdout`.
|
2021-07-09 16:45:55 +02:00
|
|
|
> More information: <https://manned.org/dmesg>.
|
2017-07-24 14:02:58 -05:00
|
|
|
|
|
|
|
|
- Show kernel messages:
|
|
|
|
|
|
2024-09-30 09:10:32 +03:00
|
|
|
`sudo dmesg`
|
2017-07-24 14:02:58 -05:00
|
|
|
|
2018-01-22 05:00:37 +00:00
|
|
|
- Show kernel error messages:
|
|
|
|
|
|
2025-03-13 04:41:47 +02:00
|
|
|
`sudo dmesg {{[-l|--level]}} err`
|
2018-01-22 05:00:37 +00:00
|
|
|
|
2017-09-01 15:33:13 -03:00
|
|
|
- Show kernel messages and keep reading new ones, similar to `tail -f` (available in kernels 3.5.0 and newer):
|
|
|
|
|
|
2025-03-13 04:41:47 +02:00
|
|
|
`sudo dmesg {{[-w|--follow]}}`
|
2017-09-01 15:33:13 -03:00
|
|
|
|
2017-07-24 14:02:58 -05:00
|
|
|
- Show how much physical memory is available on this system:
|
|
|
|
|
|
2025-03-13 04:41:47 +02:00
|
|
|
`sudo dmesg | grep {{[-i|--ignore-case]}} memory`
|
2017-07-24 14:02:58 -05:00
|
|
|
|
|
|
|
|
- Show kernel messages 1 page at a time:
|
|
|
|
|
|
2024-09-30 09:10:32 +03:00
|
|
|
`sudo dmesg | less`
|
2019-01-28 05:58:49 -05:00
|
|
|
|
|
|
|
|
- Show kernel messages with a timestamp (available in kernels 3.5.0 and newer):
|
|
|
|
|
|
2025-03-13 04:41:47 +02:00
|
|
|
`sudo dmesg {{[-T|--ctime]}}`
|
2019-01-28 05:58:49 -05:00
|
|
|
|
|
|
|
|
- Show kernel messages in human-readable form (available in kernels 3.5.0 and newer):
|
|
|
|
|
|
2025-03-13 04:41:47 +02:00
|
|
|
`sudo dmesg {{[-H|--human]}}`
|
2019-01-28 05:58:49 -05:00
|
|
|
|
|
|
|
|
- Colorize output (available in kernels 3.5.0 and newer):
|
|
|
|
|
|
2025-03-13 04:41:47 +02:00
|
|
|
`sudo dmesg {{[-L|--color]}}`
|
