2009
12.20
For my Areca 1210 raid card I wanted the “Utility” to run on startup. In Debian/Ubuntu this is really easy:
- Create the (startup) scrip; In my case this looked like this:
#!/bin/bash
#
# set -x;
#
cd /root;
screen -d -m arc_http;
- Create a symlink to /etc/init.d/
sudo ln -s ~/Documenten/bin/arc_http.sh /etc/init.d/
- Run the update-rc.d script
sudo update-rc.d arc_http.sh defaults
If you want to remove the startup script for some reason you can do this by executing this command:
sudo update-rc.d -f arc_http.sh remove
Further reading:
2009
12.20
In this howto I will show how I compiled a custom kernel in Ubuntu 8.10 (Intrepid Ibex). First we have to install some packages:
apt-get install kernel-package libncurses5-dev fakeroot wget bzip2;
apt-get install linux-source;
The newly installed kernel-sources are in /usr/src
cd /usr/src;
tar -xjvf linux-source-2.6.27.tar.bz2;
ln -s linux-source-2.6.27 linux;
cd linux;
After unpacking and changing to the appropriate directory we have to copy our old (kernel) .config and we are ready to go!
cp /boot/config-$(uname -r) ./.config;
make menuconfig;
Here are some screenshots of how I configured my kernel:
PS; I am on an Intel Core2 Quad Q9550 with:
- 8GB memory
- ATI HD Radeon 3600 series
- Areca ARC1210 with 4 x WD RE3 WD7502ABYS (RAID 10)
processor type and features
|
bus options
|
device drivers
|
networking support
|
firmware drivers
|
ubuntu supplied third-party device drivers
|
You will probably come across this bug. Adding --arch=amd64 --subarch=x86_64 when calling make-kpkg will fix it:
make-kpkg clean --arch=amd64 --subarch=x86_64;
fakeroot make-kpkg --initrd --append-to-version=-quad \
kernel_image kernel_headers --arch=amd64 --subarch=x86_64;
pin package
If everything went well, we can install our packages and make sure we pin them (although you shouldn’t need to worry if you used --append-to-version)
dpkg -i linux-headers-2.6.27.18-quad-rt_2.6.27.18-quad-10.00.Custom_amd64.deb;
dpkg -i linux-image-2.6.27.18-quad-rt_2.6.27.18-quad-10.00.Custom_amd64.deb;
If you come across this bug:
/etc/kernel/postinst.d/nvidia-common exited with return code 20
Failed to process /etc/kernel/postinst.d at ...
Just:
sudo apt-get purge nvidia-common
sudo apt-get install nvidia-common
and everything will work like a charm!
References:
2009
12.18
My friend Bart Dorlandt showed my this trick a long time ago, but I still use it each time I (re)install my desktop/laptop:
Want to get rid of the “Recent Documents” in your Gnome Menu. Execute this in your home folder.
rm .recently-used.xbel
mkdir .recently-used.xbel
2009
12.14
In CentOS (5.3) php’s shell_exec() function is disabled by default. When you try to use it you’ll see messages like this:
PHP Warning: shell_exec() has been disabled for security reasons in /var/www/...
in your error_log files. I thought it had something to do with the safe_mode in /etc/php.ini, but it turned out I had to change this line instead:
disable_functions = show_source,system,shell_exec,passthru,exec,phpinfo,proc_open
to
disable_functions = show_source,system,passthru,phpinfo,proc_open;
And after that, restart Apache:
