I find it shocking how many people don’t know about this neat Linux key combination that let’s you execute various low level commands regardless of the system’s state (as long as it’s running and hasn’t panicked.)
From the Wikipedia page:
It is often used to recover from freezes, or to reboot a computer without corrupting the filesystem.
How [...]
Posted on July 19th, 2008 by Phil Dufault
Filed under: CentOS, Gentoo, Linux, Redhat, Ubuntu | 1 Comment »
Here’s my little guide for upgrading a CentOS server to a grsec-patched kernel. At the time of this writing, this was the latest stable grsec patch available.
Fetch the sources:
wget http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.24.5.tar.bz2
wget http://grsec.linux-kernel.at/grsecurity-2.1.11-2.6.24.5-200804211829.patch.gz
Extract:
tar xjf linux-2.6.24.5.tar.gz
gzip -d grsecurity-2.1.11-2.6.24.5-200804211829.patch.gz
Patch the kernel:
patch -p0 < grsecurity-2.1.11-2.6.24.5-200804211829.patch
cd linux-2.6.24.5 && make clean && make mrproper
Copy the previous kernel config to use:
cp [...]
Posted on June 26th, 2008 by Phil Dufault
Filed under: CentOS, Linux, Redhat | No Comments »