Where is /var/log/dmesg

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Where is /var/log/dmesg

Postby Jjueh3 » 2017-07-31 16:20

Hi, so there is no /var/log/dmesg file in my Debian Stretch and I was unable to see any information about where this file now is in the relase notes of Debian Stretch.
Do they mention that kind of changes in any documentation of Debian?
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Re: Where is /var/log/dmesg

Postby Bulkley » 2017-07-31 16:33

/var/log/dmesg is active in mine.
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Re: Where is /var/log/dmesg

Postby MALsPa » 2017-07-31 17:03

I don't see the file here on the two Debian 9 systems I checked. But dmesg does work.
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Re: Where is /var/log/dmesg

Postby dasein » 2017-07-31 17:23

Just to clarify MALsPa's point: the dmesg command is distinct from any particular file.
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Re: Where is /var/log/dmesg

Postby pylkko » 2017-07-31 18:43

If I am not mistaken, this is because the contents are now to be found in journalctl.
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Re: Where is /var/log/dmesg

Postby Jjueh3 » 2017-08-01 16:49

pylkko wrote:If I am not mistaken, this is because the contents are now to be found in journalctl.

Why don't they list those changes on the release notes? is it too minor of a change to mention?
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Re: Where is /var/log/dmesg

Postby GarryRicketson » 2017-08-01 18:39

Don't know, maybe ask "them" ?
https://www.debian.org/releases/stretch/arm64/release-notes.en.pdf
Caution
Note that it is impossible to list every known issue and that therefore a selection
has been made based on a combination of the expected prevalence and impact of
issues
"What we expect you have already Done"

Before doing anything, read the Debian documentation:
Debian Documentation
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Re: Where is /var/log/dmesg

Postby Wheelerof4te » 2017-08-01 18:55

Jjueh3 wrote:Hi, so there is no /var/log/dmesg file in my Debian Stretch


Was it there when you used Jessie? Prolly not, since Jessie also runs systemd, which has journalctl.

About the question in the title, you should seriously ask Lennart and co.
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Re: Where is /var/log/dmesg

Postby pylkko » 2017-08-01 18:58

I checked the release notes and you are right, it is not mentioned there. Maybe because it is so minor. You can, of course, pipe the output of
Code: Select all
dmesg
or
Code: Select all
journalctl - k
to a file if you need that. Even do it automatically with a service or script
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Re: Where is /var/log/dmesg

Postby Thorny » 2017-08-02 08:54

Wheelerof4te wrote:Was it there when you used Jessie? Prolly not, since Jessie also runs systemd, which has journalctl.

Just to clarify, Debian Jessie still has dmesg in /var/log
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