Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Storage Operations – VxVM vs RHEL LVM2

  Storage Operation VXVM RHEL LVM2 Installation and Configuration Installed using Veritas installer Installed as part of standard build via rpm Scan for new devices # vxdctl enable # vgscan Print list of volumes # vxprint -v # lvdisplay -C Print current config (detailed) # vxdg list # vgdisplay   list volume...

1

Bash Scripting – Using Variables

Just running individual commands from the shell script is useful, but this has its limitations. Often, you’ll want to incorporate other data in your shell commands to process information. You can do this by using variables. Variables allow you to temporarily store information within the shell...

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inetd Vs xinetd in linux

The inetd daemon The inetd daemon is best described as a super-server, created to manage many daemons or services. It listens to multiple ports, and invokes only requested services. This reduces the load that services place on a system, because it means that network services –...

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Linux Admin Reference – Sendmail Issues in Redhat Enterprise Linux

Just discussing some of the common sendmail issues and troubleshooting procedures in linux  Problem: Sendmail can not send mail to users in other domains. Problem: Error log in sendmail.log. Problem:Sendmail rejects connection. Problem:Can not send email via web access client. Problem: Sendmail hangs on boot Problem:...

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