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03-14-2004, 02:45 PM
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#1
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Member
Registered: Mar 2004
Location: St. Louis, MO
Distribution: Ubuntu, Debian, Slack, RH, Gentoo
Posts: 207
Rep:
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Viewing bootup messages
Hmm, this may seem like a silly question, but I was wondering how to view the complete messages at boot time. (No, I dont mean /var/log/messages either).
There are messages at boot time I can't seem to view no matter what I do. If I SHIFT(PGUP), I can scroll up, but this doesn't work for long as the buffer gets deleted after the TTY font get loaded. So, I have tried to use the vga=ask option in lilo, but I get the same effect as using Frame Buffer (vga = xxx). Anyway, it seems like I am missing something as far as a log goes maybe (did I?) Please help. /var/log/messages isn't adequate (some of the messages I have noticed , before they went away, aren't in /log/msgs) .
If there isn't a log file created, is there some way to use a redirecter ( > ) at boot time to send these mesgs some where?
At any rate I hope someone can help!
Sincerely,
Brady
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03-14-2004, 07:42 PM
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#2
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Member
Registered: Dec 2003
Location: Next to Equator
Distribution: GNU/Linux 2.6.14
Posts: 382
Rep:
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You mean this one?:
DMESG(8) DMESG(8)
NAME
dmesg - print or control the kernel ring buffer
SYNOPSIS
dmesg [ -c ] [ -n level ] [ -s bufsize ]
DESCRIPTION
dmesg is used to examine or control the kernel ring
buffer.
Upon boot, the dmesg output is from the kernel booting, showing the devices it has found and if it has been able to configure them at all (aside from userland configuration). This log is also available in the file /var/log/dmesg.
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03-15-2004, 03:31 AM
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#3
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Amigo developer
Registered: Dec 2003
Location: Germany
Distribution: Slackware
Posts: 4,928
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dmesg | less will let you see them a page at a time.
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03-15-2004, 08:08 AM
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#4
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Member
Registered: Mar 2004
Location: St. Louis, MO
Distribution: Ubuntu, Debian, Slack, RH, Gentoo
Posts: 207
Original Poster
Rep:
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Thanks
Quote:
This log is also available in the file /var/log/dmesg.
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Yes, dmesg is the command I was looking for. The only thing is, I don't know where it is getting the input from, since I don't have the file /var/log/dmesg -- but at any rate it works, and that helps a lot!
Thanks much
-b
Last edited by bonecrusher; 03-15-2004 at 08:09 AM.
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03-15-2004, 06:33 PM
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#5
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Member
Registered: Nov 2003
Distribution: slackware 15
Posts: 546
Rep:
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A handy command could be also
dmesg > mylog (or wathever you like)
This saves a text file easy to read.
Ciao
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