howto

Fix grub on btrfs partition

# mount the btrfs root subvolume
mount /dev/sda1 /mnt -o subvol=/

# (optional) set the default subvolume
btrfs sub set @ /mnt

mount /proc /mnt/proc --bind
mount /dev /mnt/dev --bind
mount /sys /mnt/sys --bind

chroot /mnt

grub-install /dev/sda
update-grub /dev/sda

# activate first partition
fdisk -l /dev/sda

Linpack under Ubuntu / Linux

<?php
$URL="https://raw.githubusercontent.com/panticz/installit/master/install.linpack.sh";
echo "wget -q --no-check-certificate $URL -O - | bash -";
echo " 

";
$c = curl_init();
curl_setopt($c, CURLOPT_URL, $URL);
curl_setopt($c, CURLOPT_RETURNTRANSFER, 1);
echo htmlspecialchars(curl_exec($c));
curl_close($c);
echo "

";
?>

# get CPU info
CPU=$(cat /proc/cpuinfo | grep "model name" | tail -1)
COUNT=$(cat /proc/cpuinfo | grep processor | wc -l)
echo "CPU : $CPU"
echo "COUNT : $COUNT"

# OPTIONAL: configure parameter
# export MKL_DYNAMIC=false
# export OMP_NUM_THREADS=4

# run
runme_xeon64

Links
http://software.intel.com/en-us/articles/intel-math-kernel-library-linpack-download - Intel LINPACK Download
http://www.roylongbottom.org.uk/linpack%20results.htm

IPCop: Check / Update DDNS

<?php
$URL="http://dl.panticz.de/endian/checkddns";
echo "wget $URL -O /etc/cron.d/checkddns";
echo " 

";
$c = curl_init();
curl_setopt($c, CURLOPT_URL, $URL);
echo htmlspecialchars(curl_exec($c));
curl_close($c);
echo "

";
?>

<?php
$URL="http://dl.panticz.de/endian/checkddns.sh";
echo "wget $URL -O /sbin/checkddns.sh";
echo " 

";
$c = curl_init();
curl_setopt($c, CURLOPT_URL, $URL);
echo htmlspecialchars(curl_exec($c));
curl_close($c);
echo "

";
?>
chmod u+x /sbin/checkddns.sh
/etc/init.d/fcron restart

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