November 2011 - luv-main

[luv-main] iptables
by Roger 16 Nov '11

16 Nov '11

Need help understanding iptables. tcp dpt:ssh state NEW recent: SET name: SSH side: source tcp dpt:ssh state NEW recent: UPDATE seconds: 90 hit_count: 4 TTL-Match name: SSH side: source should reduce brute force attack to 4 hits in 90 seconds but last -d reports hundreds of hits per ip all within a second, it then changes ip and starts again. I've not played with iptables until a week ago. I've read up on the ubuntu, centos and fedora iptables info but still the problem. Can someone please point me in a direction to stop attacks from ip addresses after a couple of attempts. Many thanks Roger

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[luv-main] bash script
by David Zuccaro 15 Nov '11

15 Nov '11

Anyone like to critique this script for grammatical efficiency and correctness? In particular the line indicated. I'm guessing I can do command substitution better than this. title="test" ls -1 *.mp3 > mp3.txt while read filename do echo $filename song=$title${filename:5:4} echo $song id3ed -isq "`echo $filename`" id3ed -q -s "`echo $song`" "`echo $filename`" <---- id3ed -isq "`echo $filename`" done < mp3.txt

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[luv-main] Sound Issue With Gigabyte Motherboard
by David Zuccaro 15 Nov '11

15 Nov '11

Hi, I've noticed that I get much higher volume sound output in MS windows than in Debian. Obviously I want better volume output. I've checked the volume control and PCM isn't turned down. Is there something else I could check to increase the volume output? This is the output of lspci if that's any help. dz2@Palatinus:~$ lspci 00:00.0 Host bridge: Intel Corporation 82945G/GZ/P/PL Memory Controller Hub (rev 02) 00:02.0 VGA compatible controller: Intel Corporation 82945G/GZ Integrated Graphics Controller (rev 02) 00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01) 00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 01) 00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 01) 00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 01) 00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 01) 00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01) 00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1) 00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01) 00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) SATA IDE Controller (rev 01) 00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01) 01:05.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller (rev 13) dz2@Palatinus:~$ uname -a Linux Palatinus 2.6.26-2-686 #1 SMP Wed Sep 21 04:35:47 UTC 2011 i686 GNU/Linux Thanks, David

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[luv-main] New Laptop
by stripes theotoky 15 Nov '11

15 Nov '11

Hi all, I'm looking at this as a replacement laptop. http://www.notebookreview.com/default.asp?newsID=6106&review=lenovo+thinkpa… Does anyone have any experience of running Linux on it? Is there support for VT-x in the bios. I am hoping to configure it as Linux with Windows 7 64 running in Virtual Box. Regards Stripes

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[luv-main] Need help please
by Roger 15 Nov '11

15 Nov '11

I'm running Ubuntu11.10 and 3 days ago it started a problem I've not seen before. For some reason it starts Nautilus out of the blue, I cannot intentionally repeat the problem and it seems to not be attributable to starting any particular application. It continues to open up new blank Nautilus windows every second or two until there about 300 and more open randomly placed on the desktop then the computer stalls and has to be shut down, left off for a few seconds and cold booted. ps aux shows long lists of nautius instances but shutting some down with kill restarts more. Got me very puzzled. Need help quick please thanks in advance Roger

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Re: [luv-main] New Laptop
by Russell Coker 15 Nov '11

15 Nov '11

On Tue, 20 Sep 2011, stripes theotoky <stripes.theotoky(a)googlemail.com> wrote: > I'm looking at this as a replacement laptop. > > http://www.notebookreview.com/default.asp?newsID=6106&review=lenovo+thinkpa > d+w520 > > Does anyone have any experience of running Linux on it? > Is there support for VT-x in the bios. > I am hoping to configure it as Linux with Windows 7 64 running in Virtual > Box. http://etbe.coker.com.au/2011/09/09/modern-laptops-suck/ Thinkpads are generally good for what they are, but modern laptops suck because they seem to be designed to compete with desktop systems - and the Thinkpad W series seems to be one of the worst in this regard. Modern laptops can't run on your lap because they either have passive cooling in the base through a metal shell (like Macs) or cooling vents (like Thinkpads). They also can't run at high speed when closed (so you can't close the lid after starting a big compile) because the keyboard is used as part of the system cooling. The one you are looking at has an NVidia graphics controller which means it will either be slow or have a binary-only kernel module. I expect that KVM will work as it works on my Thinkpad T61 and I haven't heard reports of regressions in such things. I haven't tried running Windows under KVM though. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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[luv-main] bash: preserving newlines when storing output in variables.
by Andrew Spiers 12 Nov '11

12 Nov '11

I couldn't google for this. How do I preserve line breaks when assigning the result of something to a variable? aspiers@cape:~/tmp/horror$ ls -1 file1 file2 file3 aspiers@cape:~/tmp/horror$ echo -e $(ls -1) file1 file2 file3 There must be something better than this: aspiers@cape:~/tmp/horror$ echo -e $(ls -1| awk '{print $0,"\\n"}') file1 file2 file3

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[luv-main] bash script
by David Zuccaro 11 Nov '11

11 Nov '11

Anyone like to critique this script for grammatical efficiency and correctness? In particular the line indicated. I'm guessing I can do command substitution better than this. title="test" ls -1 *.mp3 > mp3.txt while read filename do echo $filename song=$title${filename:5:4} echo $song id3ed -isq "`echo $filename`" id3ed -q -s "`echo $song`" "`echo $filename`" <---- id3ed -isq "`echo $filename`" done < mp3.txt

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[luv-main] Fedora 16 iso
by Roger 09 Nov '11

09 Nov '11

I have forgotten the process to copy the Fedora iso to dvd. CD/DVD Creator: Write to Disc offers a choice of <Burn as File> and <Burn Contents> Which of these is the correct choice to make a bootable Fedora 16 dvd that I can install from? Thanks Roger

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[luv-main] KDE pause
by Russell Coker 06 Nov '11

06 Nov '11

Several of my relatives use KDE as their desktop environment on Debian/Squeeze, now only one system I am responsible for is i386 and the rest are all AMD64. Apart from one system they all work fine. The problem system is an AMD64 system with a single SATA disk that has a KDE pause periodically, kmail seems to be the most common culprit for triggering it. When it happens all KDE stuff stops working for a while, often logging out (by killing the session from another VT) is the only way to solve it. There are multiple users on that system who have the same problem, so it seems to be a system issue not an issue of one user with messed up KDE configuration. smartctl doesn't report any problems and other disk dependent stuff works OK when KDE isn't responding. Also when it happens there are no D state processes. So it seems that the hard drive is not responsible. Any ideas as to what I should look at to investigate this issue? Switching to GNOME is not a viable option. But as a test I might try running kmail after logging in to a GNOME session next time I visit them. Also the system is online 24*7 and has dynamic DNS configured so I can login at any time. So tests that I can do by reading log files will be preferred to tests that require doing something with the keyboard and mouse. Thanks in advance for any advice. -- My Main Blog http://etbe.coker.com.au/ My Documents Blog http://doc.coker.com.au/

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