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How do I display information from /proc such as memory, Load average, uptime, page activity, context, disk status, interrupts using a shell or perl script?
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What the differences between a Linux or UNIX software update and an upgrade? How do I perform the both?
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UNIX / Linux: Shell Scripting With mail Command

How do I send e-mails from a shell script including file attachments?
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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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CentOS / RHEL Linux: Remove GDM

How do I uninstall a GUI Gnome login system ( GDM ) from my CentOS Linux v5.5 based server?
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How do I install PostgresSQL interface for perl for programming purpose under Redhat / RHEL / Fedora / CentOS Linux?
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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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