After 22 months of constant development, Debian Lenny stable is finally released! Debian Lenny is the latest from the Debian project, which is a GNU/Linux distribution. Debian Lenny supports a total of twelve processor architectures and includes the KDE, GNOME, Xfce, and LXDE desktop environments.

Debian GNU/Linux runs on computers ranging from palmtops and handheld systems to supercomputers, and on nearly everything in between. A total of twelve architectures are supported: Sun SPARC (sparc), HP Alpha (alpha), Motorola/IBM PowerPC (powerpc), Intel IA-32 (i386), IA-64 (ia64), HP PA-RISC (hppa), MIPS (mips, mipsel), ARM (arm, armel), IBM S/390 (s390), and AMD64 and Intel EM64T (amd64).

To upgrade to Lenny, you’ll need to update your /etc/apt/source.list file, which contains information about which repository you download your update packages from. My source.list file being New Zealand based, it’s a good idea to change it to your country, for faster downloads. Note, # is a commented out line.

deb http://ftp.nz.debian.org/debian/ lenny main
deb-src http://ftp.nz.debian.org/debian/ lenny main
deb http://security.debian.org/ lenny/updates main contrib
deb http://ftp.us.debian.org/debian lenny main

# non-free priority software
#deb http://ftp.nz.debian.org/debian/ lenny main non-free contrib

From there, depending on what you use, you’ll need to `apt-get update; apt-get dist-upgrade; apt-get upgrade`, or if your using aptitude instead, `aptitude update; aptitude full-upgrade`.