Timestamps in kernel log comes from monotonic clocksource which does not
tick when system suspended. Suspended time easily sums into hours and days
rendering human readable timestamps in dmesg useless.
Adjusting timestamps accouring to current delta between boottime and
monotonic clocksources produces accurate timestamps for messages printed
since last resume. Which are supposed to be most interesting.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Option --follow-new (-W) works the same as --follow (-w) but initially
seeks to the end of kernel ring buffer, so it prints only new messages.
Useful for capturing kernel messages during actions without past log.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
There is value in ensuring that manual page sections use consistently
named sections, as far as possible, and also that sections have a
consistent order within manual pages. This is one of a series of patches
to place manual page sections in a consistent order.
In this patch, we ensure that the AUTHORS, COPYRIGHT, SEE ALSO, and
AVAILABILITY sections are always placed at the end of the page.
Testing that no gross editing mistake (causing accidental loss or addition
of text) was performed as follows:
$ cat $(grep '\.SH' -l $(find . -name '*.[1-9]') |sort) | sort > a
[Apply patch]
$ cat $(grep '\.SH' -l $(find . -name '*.[1-9]') |sort) | sort > b
$ diff a b
$ echo $?
0
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Add a comma (,) after "e.g." and "i.e.", or use English words
(man-pages(7) [package "manpages"]).
Abbreviation points should be protected (usually with the
non-printing, zero width character '\&') from being interpreted as an
end of sentence, if they are not, and that independent of their current
place on the line.
This is important when typing, as one does not usually know in
advance when the editor jumps to a new line.
Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
Sorry detail-oriented people tend to wipe these out if they notice them.
Add in automated tools and lots of excess end-of-line spaces get wiped
out.
Addresses: https://github.com/karelzak/util-linux/pull/849
Signed-off-by: Karel Zak <kzak@redhat.com>
We have no way how to print the kernel message buffer in really raw
way. The new option --noescape disables all \x<hex> translations.
Addresses: https://github.com/karelzak/util-linux/issues/858
Signed-off-by: Karel Zak <kzak@redhat.com>
When providing an abbreviation of the level name with the option "-n, --console-level level",
it corresponds to the level (included) up to which messages are displayed on the console.
If a level number is given, this level is excluded.
So in the given example, "-n 1" is equivalent to "-n emerg".
Signed-off-by: Jean-Philippe Romain <jean-philippe.romain@st.com>
Use the correct macro (I, B) for the font change of one argument, not
those that are used for alternating two fonts, like "BR", "IR", "RB",
or "RI".
Signed-off-by: Bjarni Ingi Gislason <bjarniig@rhi.hi.is>
The dmesg may require capabilities(7) when /proc/sys/kernel/dmesg_restrict
has none zero value. This is explained in detail in syslog(2) manual page.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The kernel outputs multi-line messages (kernel messages that contain
the end-of-line character '\n'). These message are currently displayed by
dmesg as
[965199.028940] runnable tasks:
task PID tree-key switches prio
wait-time sum-exec sum-sleep
----------------------------------------------------------------------------------------------------------
The kernel timestamps each of these lines with [965199.028940] and the
dmesg utility should do the same.
Add the 'force-prefix'/'-p' dmesg option to add decode & timestamp
information to each line of a multi-line message.
Notes: The new print_record() algorithm stores the decode & timestamp
information in buffers. If the force-prefix option is used, the
message is split into separate lines and each line is prefixed with
the stored decode & timestamp information. The splitting of the
message into separate lines is done using strtok() which requires
write access to the message buffer (ie, the const message buffer is
now copied into a writeable buffer).
Successfully tested by me by looking at sysrq-t and sysrq-w output.
All known good /tests passed with these changes.
[kzak@redhat.com:
- use snprintf()
- cleanup \n usage (don't count line break to the
message text in the parsers and always print \n after the text
- add the option to the man page
- use --force-prefix for kmsg only, old syslog(2) API splits messages itself
- strdup() the message text only on force-prefix]
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>
This patch does only the following:
* Order SEE ALSO entries first by section name, then alphabetically
within section
* Adds one or two missing commas in SEE ALSO lists
* Removes one or two periods that were (inconsistently) used
at the end of SEE ALSO lists.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Mainly more option sorting, some formatting adjustments, and the adding
of a missing --version here and there.
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
* '2012wk22' of git://github.com/kerolasa/lelux-utiliteetit:
docs: clean up getopt.1 manual
docs: clean up dmesg.1 manual
docs: clean up chcpu.8 manual
fileutils: xmkstemp() interface change
docs: fix all man page groff warnings
tools: add checkmans.sh
docs: clean up wdctl.8 manual
docs: clean up login.1 manual
login: allow TTYGROUP name begin by number
build-sys: add su executable to .gitignore
logindefs: change getlogindefs_num() to return unsigned long
Conflicts:
login-utils/su.c
sys-utils/dmesg.1
* Add lightness to synopsis.
* Add few missing italic highlights to text segments which refer
command line argument(s).
* Turn off bold where ever possible (makes text unnecessarily heavy).
* Add spaces after dots (English spacing).
* Use URL and email macros where appropriate.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Use dates without the day, use the full month name, put "util-linux" in
the lower left corner, and "User Commands" or "System Administration"
at the top center.
Also improve here and there the one-line program description.
Signed-off-by: Benno Schulenberg <bensberg@justemail.net>
-u : print kernel messages
-k : print userspace message
The options could be mixed together or with --facility option too.
Signed-off-by: Karel Zak <kzak@redhat.com>
