RedHat and Friends

How do I configure serial console under CentOS Linux or Red Hat Enterprise Linux 6.x running on HP or Dell server?

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The top and free command display the total amount of free and used physical and swap memory in the server. How do I determine which process is using swap space under Linux operating systems? How do I find out swap space usage of particular process such as memcached?

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I have setup an Apache web server on CentOS Linux. How do I configure firewall to allow or block access? How do I setup firewall for a web server under RHEL or CentOS Linux v6.x?

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How do I sort all *.avi or *.py files in $HOME/Download/ directory by file size using Linux ls command line utility?

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How can I install Nginx web server On CentOS Linux 6 or Red Hat Enterprise Linux 6 using yum command?

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A wireless NIC is showing as wlan0 but I need to be appear as eth1. How can I rename wlan0 devices through udev as eth1? How do I change or rename eth0 as wan0 under Linux operating systems?

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A properly configured firewall can greatly increase the security of RHEL / CentOS based system. How do I configure a shorewall based firewall for CentOS or Red Hat Enterprise Linux system with an Internet connection? How do I install and configure shorewall to protect the following small business network?

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