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rhel 5

RHEL / CentOS / Fedora: Verify GPG Key For Package Update

How do I verify that the system using correct GPG keys to verify all patches, packages and update installed from RHN or repo under RHEL 5 or 6 server 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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CentOS / RedHat: Set Password Quality Requirements

I've created a unique default group for each user and also used Linux groups to enhance security. Further a group called "users" allowed to login via ssh. However, I need to enforce password quality-control for all users. How do I create a password policy and enforce its use under CentOS or RHEL 5.x server operating systems?
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Redhat Linux yum grouplist and groupinstall Option Not Working

I'm trying to install all the default packages by group using 'yum groupinstall groupname' command under RHEL v5.x. But, grouplist, groupinstall, and groupdelete options are not working with yum. How do I fix this issue and make sure yum command works with software groups under Redhat Enterprise Linux to increase my productivity?
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Yum In RHEL 5

How do I use yum command under RHEL 5 to install and update packages?
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Vbulltin PHP Xcache Displaying Same Forum Data For Both Boards Error and Solution

Q. I've followed your Xcache php 5.x opcode cacher installation under RHEL 5 for my vbulltin board. I see good boosting in performance. Now I've installed 2nd VB forum on the same server and I see all sub-forums hosted from 1st forum. So I had to disable Xcache. I want Xcache for both board on same host. How do I fix this mess?
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yum problems: Skip Packages With Broken Dependencies When Upgrading System

Q. I made a mistake and added additional repo under CentOS / RHEL 5.x server. Now when I try to upgrade packages it gives me out broken dependencies / missing dependency error. How do I skip broken packages and apply updates to other installed software's?
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View Installation / Uninstallation Script Inside The RPM File

Q. How do I view the pre / post installation or uninstallation script inside the RPM file called foo.rpm under Red Hat Enterprise Linux / RHEL / CentOS / Fedora / Suse Linux? How do I list the package specific scriptlet(s) that are used as part of the installation and uninstallation processes?
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Redhat / CentOS Linux Install JBoss Application Server

Q. How do I install JBoss Application Server under RHEL 5 / CentOS 5 Linux?
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How do I know When I Need To Update My Linux System Software?

Q. How do I know when I need to update my Linux system? How do I know new patches are available for CentOS Linux (Red Hat) / Debian Linux server system?
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