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enterprise linux

I'm running a KVM virtual machine (FreeBSD 7 and Fedora Linux 13 desktop) under Redhat Enterprise Linux 5.5. However, I'm not getting the remote access via VNC (Virtual Network Computing) to access my Fedora Linux graphical desktop or FreeBSD console. How do I turn on VNC support without reinstalling both operating systems?
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yum update Linux Error: Missing Dependency: xen-libs

When I type "yum update" under RHEL 5.x server I get the following error:

Error: Missing Dependency: xen-libs

How do I fix this problem?
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I'm testing Redhat Enterprise Linux 6 for our apps. However, RHN do not support beta RHEL 6 software. How do I use yum command to install additional software without using DVD ROM?
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SUSE Linux: Install RPM File And Packages

Suse Linux is similar to RPM based Linux distro such as RHEL but does not comes with yum command. How do I install a rpm file or packages such as Apache or PHP under Suse Enterprise / OpenSuse Linux?
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Where are NIC (network interface configuration) files located in the Redhat / Fedora / Centos Linux?
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KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware containing virtualization extensions Intel VT or AMD-V. How do I install KVM under CentOS or Red Hat Enterprise Linux version 5.5?
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I'm using KVM to run multiple virtual machines under Redhat Enterprise Linux server 5.5. I've installed FreeBSD 7.x 64 bit as guest operating systems. How do I redirect the FreeBSD version 6, 7 or 8 virtual machine console to a serial port using virsh console command for management purpose from host itself?
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