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


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...


Bash Scripting – Displaying Interactive Messages

Most shell commands produce their own output, which is displayed on the console monitor where the script is running. Many times, however, you will want to add your own text messages to help the script user know what is happening within the script. You can do...


Bash Scripting – Performing Math

Another feature crucial to any programming language is the ability to manipulate numbers. Unfortunately, for shell scripts this process is a bit awkward. There are two different ways to perform mathematical operations in your shell scripts.


Configuring Open-E DSS for SCSI-3 Persistent LUN’s

The installation of Opene-dss has been published in previous post. Kindly refer: http://mentorsup.com/blog/2016/02/installation-of-open-e-dss-on-vmware-workstation-for-shared-storage-in-unix-supported-for-scsi-3-persistent-reservation/ Creation of iSCSI Volume: I have assigned 1*5GB lun from VMware on Opene-dss VM. Login to opene-dss via GUI. Go to configuration -> Volume Manager -> Volume Group Now tick the disk (one...


Installation of Open-e DSS on VMware Workstation for shared storage in UNIX (supported for SCSI-3 Persistent Reservation)

Installation of Open-e DSS on VMware Workstation for shared storage in UNIX (supported for SCSI-3 Persistent Reservation) Open-E Data Storage Software V7 is a Linux-based data storage software used for building and managing centralized data storage servers – NAS and SAN. I have installed the Open-e...


How to scan for disks with Storage Foundation for UNIX and Linux

When adding new disks to a Storage Foundation configuration, separate scans are required by the operating system (OS) and by the Storage Foundation application. This post provides information about the commands and procedures that may be used to scan for disks.


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