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Linux Disable / Remove All NFS Services

NFS was not designed with security in mind, and has a number of weaknesses, both in terms of the protocol itself and because any NFS installation must expose several daemons, running on both servers and clients, to network attack. I use my CentOS based server only to server web pages and nothing else. How do I disable NFS services under RHEL / CentOS / Fedora Linux?
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Sysadmin because even developers need heroes!!!

OpenSuse Linux: How to Read Logs or Log Files

How do I read and/or view logs files under a OpenSuse or Novell Enterprise Linux?
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CentOS Linux Install zlib-devel RPM Package

How do I install zlib-devel (header files and libraries for Zlib development) package under CentOS Linux 5.x server using command line options?
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BIND: Max open files (1024) is smaller than max sockets (4096) Error and Solution

While going though my logs I found that BIND9 on Debian version 5.x is giving a warning which read as follows:

max open files (1024) is smaller than max sockets (4096)

How do I fix this problem?
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CentOS Install glib-devel

How do I install glib-devel under RHEL / Fedora / CentOS Linux?
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Redhat / CentOS: ImageMagick Installation

How do I install ImageMagick under CentOS / Fedora / RHEL / Redhat Linux for displaying and manipulating images via perl, php, blog and other web based apps?
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Existing lock /var/run/yum.pid: another copy is running as pid 523.

I‘m running the command yum update -y and getting the following error:

Loaded plugins: fastestmirror, priorities
Existing lock /var/run/yum.pid: another copy is running as pid 523.
Another app is currently holding the yum lock; waiting for it to exit…

The other application is: yum-updatesd-he
Memory : 14 M RSS ( 26 MB VSZ)
Started: Tue Feb 9 08:19:02 2010 – 14 day(s) 11:47:39 ago
State : Sleeping, pid: 523
Another app is currently holding the yum lock; waiting for it to exit…
The other application is: yum-updatesd-he
Memory : 14 M RSS ( 26 MB VSZ)
Started: Tue Feb 9 08:19:02 2010 – 14 day(s) 11:47:41 ago
State : Sleeping, pid: 523

How do I fix this problem?
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While updating my CentOS / RHEL HP Linux server via yum command it givens an error which read as follows:

There are unfinished transactions remaining. You might consider running yum-complete-transaction first to finish them

How do I fix this problem under RHEL / CentOS Linux 5.x server operating systems?
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Update Centos Linux

How do I update Centos Linux 5 software and apply security patches?
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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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