6log

Compile a debian kernel with make-kpkg

skanx — Wed, 17 Dec 2008 21:09:44 +0000

The debian way (etch packages):
# apt-get install linux-source-2.6.18 kernel-package build-essential fakeroot libncurses5-dev $ cd /usr/local/src $ tar jxvf /usr/src/linux-source-2.6.18.tar.bz2 $ cp /boot/config-2.6.18-6-686 linux-source-2.6.18/.config $ cd linux-source-2.6.18 $ make menuconfig $ fakeroot make-kpkg --initrd clean $ fakeroot make-kpkg --initrd kernel_image

Examples:
fakeroot make-kpkg --arch amd64 clean
fakeroot make-kpkg --arch amd64 --initrd --append-to-version=-skx.2008082001 kernel_image

Avez-vous pensé à adhérer à l’April ?

skanx — Tue, 02 Dec 2008 19:50:48 +0000

L’April a pour but la promotion et la défense des logiciels libres. Je connais l’existence de l’April depuis des années, mais pourtant je n’avais jamais pensé à y adhérer… voilà qui est fait, profitant de la piqûre de rappel administrée par la campagne d’adhésion qui a lieu actuellement : “Objectif 5000 adhérents”.

L’April défend nos idées, le montant de minimal de la cotisation est de 10 euros, et je pense qu’ils seront bien utilisés.

J’adhère toutes affaires cessantes !

Jumpcut: MacOSX clipboard manager

skanx — Fri, 14 Nov 2008 08:46:02 +0000

Jumpcut is another very useful menu bar application. This one keeps an history of the text you have copied or cut. You can access it later with a configurable hotkey, even if you’ve copied another text in between.

Jumpcut is open sourced under the MIT License.

http://jumpcut.sourceforge.net/

Caffeine: don’t let your Mac fall asleep

skanx — Thu, 13 Nov 2008 10:46:56 +0000

Caffeine is a cute little “menu bar” program that prevents your Mac from going to sleep when you don’t want it to, with just a click. No need to change all your screen saver and energy saver preferences any more!

Great when you’re using a media player or flash movie player that doen’t do it by itself.

http://lightheadsw.com/caffeine/

Disable a Linux module

skanx — Mon, 10 Nov 2008 15:46:44 +0000

The RHEL / Centos way:
edit /etc/modprobe.conf, and add :
alias off

The Debian way:
Create a file ‘/etc/modprobe.d/’ containing ‘blacklist ’.
Run ‘depmod -ae’ as root
Recreate your initrd with ‘update-initramfs -u’
/!\ Read http://wiki.debian.org/KernelModuleBlacklisting, then do not use ‘/etc/modprobe.d/blacklist’ and remove ‘/etc/modprobe.conf’ as it supersedes anything in /etc/modprobe.d/*.
source : Debian wiki

The Tobi way:
edit /etc/modprobe.conf, and add :
install /bin/true

inspiration: DotMana

Dynamic MMap ran out of room

skanx — Mon, 13 Oct 2008 16:06:50 +0000

When running apt-get update with a lot of sources in your sources.list, you may encounter this error:
Reading package lists... Error! E: Dynamic MMap ran out of room

Add this line APT::Cache-Limit "25165824"; to your /etc/apt/apt.conf, and run apt-get update again.

Arch Linux: Pacman cheat-sheet

skanx — Wed, 01 Oct 2008 15:10:15 +0000

I’m returning to this excellent distro: Arch Linux

Synchronize the local package database with the remote repositories:
pacman -Sy

Install a package:
pacman -Sy package_name

Remove a package:
pacman -R package_name

Update the system:
pacman -Syu

Lenny, Xen domU and amd64

skanx — Tue, 30 Sep 2008 15:24:30 +0000

There is not yet a xen-amd64 domU kernel for Lenny. There might not be one on release day. Discussion here: http://groups.google.com/group/linux.debian.devel/browse_thread/thread/8940430a093bbda5/546883797d0cbdf9

Fortunately, someone builds a 2.6.26-xen-amd64 kernel.
Add this to your sources.list:
deb http://kernel-archive.buildserver.net/debian-kernel/waldi/xen-extra/ all main

Install these packages:
linux-image-2.6.26-1-xen-amd64
linux-modules-2.6.26-1-xen-amd64

Fix the “new Xen console” problem (xen now uses hvc0 for its console):
If you use pygrub, in grub.conf on the domU add these kernel parameters : console=hvc0 xencons=tty
title Debian 2.6.26 kernel /boot/vmlinuz-2.6.26-1-xen-amd64 ro root=/dev/sda1 console=hvc0 xencons=tty initrd /boot/initrd.img-2.6.26-1-xen-amd64

If you don’t use pygrub, specify extra = “console=hvc0 xencons=tty” in your virtual machine xen config file.

Use at your own risk

By the way, this fixed a nasty bug for me: php5-cli used to segfault a lot when using linux-image-2.6.18-6-xen-amd64 under Lenny. It’s stable now.

Edit: linux-image-2.6.26-1-xen-amd64 is now available in unstable

WordPress sitemap plugin

skanx — Sat, 27 Sep 2008 08:27:52 +0000

Someone told me I had to make a sitemap for this blog…

This plugins does that all right: Google XML Sitemaps.
Easy to install and use. Extremely configurable. Will automatically update the sitemap when you add or modify something, and notify sitemap-aware search engines (Google, MSN, Ask.com and Yahoo are supported).

WordPress search engine optimization

skanx — Fri, 26 Sep 2008 08:00:21 +0000

Well, now that I just had my first non-spam comment, I have to start improving my search engine referencing, right ?

I noticed that I had no description meta tag, and that google just used the beginning of the last post for a description. This is not right (and not sexy). The problem is the same for every single page (home, tags, categories, archives, single posts, etc.).
Wait, did I say ? Tags, categories and archives ? Search engines index all of these pages ? So every post must be indexed at least 3 times. Doesn’t looks good either, does it ?

I just installed a new plugin that promises to adress all of these problems : all-in-one-seo-pack. At once. Really cool. Optimizes titles, generates META tags automatically, avoids duplicate content, very configurable (but still easy to install: you don’t have to fine-tune everthing, just enter a title and a description. The default config is OK in most cases).