View system information with /proc/cpuinfo and /proc/meminfo

There are 2 files available on a Linux system which will give a user a wealth of information about a system. These files, /proc/cpuinfo and /proc/meminfo are written by the Linux kernel and tell you important details about your cpu and memory.
Both files are read-only and can be viewed with any text editor. [...]

Upgrade Gentoo Linux Kernel

Updating your kernel is important if you want to take advantage of new hardware support or bleeding edge features.  Aside from these obvious benefits it also allows you to keep up with security patches, system optimization, and overall stability issues.
The first thing you have to do is emerge the latest gentoo-sources package.

# emerge -u gentoo-sources

The [...]

Select threading implementation using LD_ASSUME_KERNEL

For backwards compatibility, many Linux distributions support both the older LinuxThreads implementation as well as the newer Native POSIX Thread Library (NPTL). By setting the LD_ASSUME_KERNEL environment variable you can tell the dynamic linker to assume that it is running on top of a particular kernel version. This will override the dynamic linker’s default [...]