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Bill Cosby
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Joined: 22 Jan 2005
Posts: 430
Location: Aachen, Germany
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 Posted: Thu Oct 09, 2008 7:40 pm Post subject: sysklogd and xconsole |
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Hi there,
I am running a full ~x86 Gentoo machine, and everything works fine, except that somehow udev doesn't create the fifo /dev/xconsole.
Now my question is, do I actually need xconsole or can I use /dev/console instead and just read it with xterm/urxvt -C?
I mean can I pipe sysklogd to console instead of xconsole?
Or how can I tell udev to create xconsole?
Thanks in advance
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notHerbert
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| Posted: Thu Oct 09, 2008 9:41 pm Post subject: |
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Bill Cosby,
If you just want some log tailing on your desktop, you can use xrootconsole <logfile>
Example | Code: | | xrootconsole /var/log/messages |
see xrootconsole --help for details.
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Bill Cosby
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Joined: 22 Jan 2005
Posts: 430
Location: Aachen, Germany
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| Posted: Fri Oct 10, 2008 11:27 am Post subject: |
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| notHerbert wrote: | Bill Cosby,
If you just want some log tailing on your desktop, you can use xrootconsole <logfile>
Example | Code: | | xrootconsole /var/log/messages |
see xrootconsole --help for details.
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Well thanks, however I don't want log tailling on my desktop, I want a file where I can extract certain log information from, /dev/console would be nice, I am not even sure what the difference to /dev/xconsole is, however when I start my Gentoo box then there is no /dev/xconsole file. How can I tell udev to create it?
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notHerbert
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| Posted: Fri Oct 10, 2008 11:59 am Post subject: |
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xconsole is a xbase-clients application - looks like a small xterm. You can pipe all syslog into it by amending your syslog.conf file.
Here is a section from syslog-ng.conf | /etc/syslog-ng/syslog-ng.conf: | # By default messages are logged to tty12...
destination console_all { file("/dev/tty12"); };
# ...if you intend to use /dev/console for programs like xconsole
# you can comment out the destination line above that references /dev/tty12
# and uncomment the line below.
#destination console_all { file("/dev/console"); }; |
I suppose that you can pipe it into any file such as $HOME/somefile.  |
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Bill Cosby
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Joined: 22 Jan 2005
Posts: 430
Location: Aachen, Germany
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| Posted: Tue Oct 21, 2008 9:17 am Post subject: |
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| notHerbert wrote: | | xconsole is a xbase-clients application - looks like a small xterm. You can pipe all syslog into it by amending your syslog.conf file. |
Yeah, I appreaciate your explenation, but I know what it is. What /dev/console is was mytserious to me, but now I know that it is a device file for my actual console, so that anything I write to it will be displayed by the console. Still ...
I want to know how I can create the xconsole on boot, so far I am sure it is done via udev.
Or how do I cahnge permissions for the /dev/console file, and is this even safe?
| notHerbert wrote: | | I suppose that you can pipe it into any file such as $HOME/somefile. |
I suppose so, but my question still stands.
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notHerbert
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| Posted: Wed Oct 22, 2008 9:19 am Post subject: |
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Well, you don't really need xconsole until you start an X session.
So one way to use xconsole is to put into $HOME/.xinitrc a command such as this | Code: | | sudo xconsole -file /var/log/messages & |
You could even make it sticky through the window manager.
If you use KDM there is an Xsetup file /usr/kde/3.5/share/config/kdm/Xsetup, such a command might work well (untested) | Code: | | xconsole -file /var/log/messages & |
There is also $HOME/.kde/Autostart, and I think there is a GUI in Gnome to run autostart programs.
You could even create a destination in /etc/syslog[d-ng] to pipe to /var/log/console only selected logs, etc...
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Bill Cosby
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Joined: 22 Jan 2005
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Location: Aachen, Germany
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| Posted: Wed Aug 12, 2009 6:36 pm Post subject: |
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Hejhej, I am back, I simply let this problem rest, but I am still interested in it.
@notHerbert, I am talking about the device file xconsole, not the program.
It is called /dev/xconsole, and as I read earlier today, on systems which use udev it isn't present (anymore?). I am not sure why.
However, it is a special file, I can create it with:
| Code: | | mknod -m=644 /dev/xconsole |
then redirect the output from my syslog daemon to it, and then read it with the application program Xconsole.
My question are, why has xconsole disappeared ,is there a recent replacement, and if not how do I tell udev to create this file for me, or what is the general usage here?
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STrRedWolf
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Joined: 02 Sep 2002
Posts: 72
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| Posted: Sat Aug 23, 2014 2:26 pm Post subject: |
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I have the same setup. Sysklogd was complaining about a /dev/xconsole. So after a google search, the Gentoo logging documentation pointed me back to /etc/syslog.conf:
| Code: | # The named pipe /dev/xconsole is for the `xconsole' utility. To use it,
# you must invoke `xconsole' with the `-file' option:
#
# $ xconsole -file /dev/xconsole [...]
#
# NOTE: adjust the list below, or you'll go crazy if you have a reasonably
# busy site..
#
daemon.*;mail.*;\
news.err;\
*.=debug;*.=info;\
*.=notice;*.=warn |/dev/xconsole
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Huh, so it needs to be a named pipe. Well, that's the "mkfifo" command:
| Code: | | mkfifo -m 644 /dev/xconsole |
But then, you may just want to disable it by prefixing the lines with hashes. |
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