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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Tutorial details
Difficulty level	Easy
Root privileges	Yes
Requirements	shutdown command
Est. reading time	N/A

How do I shutdown a Linux powered server using command line option?
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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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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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How do I shutdown Linux system from terminal or command line options?
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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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