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lsb_release -a

Recently Debian Linux version 7.0 ("Wheezy") released. This version shipped with many new features - improvements to multimedia support, improved security through hardening flags and the OpenStack suite and the Xen Cloud Platform to name a few. How do I upgrades from Debian Linux version 6.x.x (squeeze) to the latest version 7.0.0 wheezy using command line options? How do I upgrade my Debian 6.x server to 7.x over the ssh session?
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What Version Of Red Hat Linux (RHEL) Am I Running?

I am a new Red Hat Enterprise Linux user. How do I find out what version of RHEL am I using from the shell prompt?
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HowTo: Ubuntu Linux Kernel Version Command

I am a new Ubuntu Linux user and purchased a laptop from Dell with per-installed Ubuntu operating systems. How do I find the Linux kernel version and Ubuntu release version using the terminal application?
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HowTo: Upgrade Debian Lenny to Squeeze

How do I upgrade Debian stable Linux (Lenny) server to Squeeze for the testing purpose using command line options?
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