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server system

Yum Command Check and Apply Only Security Updates

How do I only lists and/or updates to be limited using security relevant criteria when I run the yum command under CentOS / RHEL based server system?
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Linux Reboot Command Example

How do I reboot my HP Linux server using command line option? How do I remotely reboot my CentOS or Debian based Linux server?
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Linux Command To Shutdown HP/IBM/Sun/Dell Server System

How do I shutdown a Linux powered server using command line option?
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Slow DNS on Linux with IPv4 and IPV6 Configured Firewall

I'm getting slow DNS response from ssh and other network related traffic with delay of 30-60+ seconds per connection. All of our servers are behind hardware based dedicated firewall. My RHEL v6.1 server system running on HP hardware. How do I fix this problem?
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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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Howto: Shutdown Linux System From Terminal

How do I shutdown Linux system from terminal or command line options?
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Linux tar: /dev/st0: Cannot write: Invalid argument error and solution

Q. When I run tar command it fails with an error that read as follows:

tar: /dev/st0: Cannot write: Invalid argument

How do I fix this error under CentOS / Debian / Fedora / RHEL Linux HP server systems?
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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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Debian Linux Stop Iptables Firewall

H do I stop Iptables firewall under Debian Linux server system?
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Monit: Monitor SSHD Server and Auto Restart SSH If It Does Not Respond

Q. How do I monitor my ssh server with monit? How do I restart ssh server if it does not respond or dead due to any issues under Linux?
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