This article describes how to write and execute a "Hello World" bash script on Linux (Fedora).  1. the prerequisitesa text editor of your choice (e.g. vi)the bash shell
make sure you have installe [ ... ]

How to boot into rescue mode on a paravirtualized XEN guest
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How to access a virtual machines filesystems from Domain-0

Sometimes you have to access the filesystems of a virtual machine without boo [ ... ]