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May 23, 2025
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Author: Prakash Subramanian

Mapping SAN LUN and associated VxVM disks on Linux
Cluster / Cluster File System / Linux / Linux Administration / VCS / Veritas Cluster

How to find SAN LUN Mapped to VxVM Disk in Linux

July 19, 2023July 22, 2023 - by Prakash Subramanian - Leave a Comment

We’ve written several articles in the past to find LUN ID mapped to Block device/disk, but when you’re managing a VCS cluster there are some situations where you might want …

How to find SAN LUN Mapped to VxVM Disk in Linux Read More
Upgrade RHEL_7 to RHEL_8
Linux Administration / Red Hat / Red Hat Enterprise Linux / RHEL

How to Upgrade from RHEL 7 to RHEL 8

June 13, 2023June 17, 2023 - by Prakash Subramanian - Leave a Comment

As you would have already known that the Red Hat Enterprise Linux (RHEL) 7 maintenance support phase will come to an end in June 2024. It’s time to prepare for …

How to Upgrade from RHEL 7 to RHEL 8 Read More
Removing SAN disk or Storage Device (LUN) from Linux
Linux / Linux Administration / Linux Commands

Six Simple Steps to Remove a Storage Device (LUN) from Linux

February 19, 2023February 20, 2023 - by Prakash Subramanian - 1 Comment

There are situations where a storage device or LUN must be removed from running system without any issue. This happens for a variety of reasons, but most commonly, when the …

Six Simple Steps to Remove a Storage Device (LUN) from Linux Read More
How to Resize Existing LUN/Disk on Linux
Linux Administration / Linux Advanced Commands

How to Resize Existing SAN Disk on Linux

May 16, 2022December 10, 2022 - by Prakash Subramanian - Leave a Comment

In most cases, disk space can be expanded by adding a new LUN or SAN disk to the system. But in some scenario, you may need to resize the existing …

How to Resize Existing SAN Disk on Linux Read More
Linux Advanced Commands / Linux Commands / Shell Script

How to copy files & folders from Local system to Remote system in Linux?

January 18, 2019October 28, 2019 - by Prakash Subramanian - Leave a Comment

Copying a file from one server to another server or local to remote is one of the routine task for Linux administrator.It can be done in many ways and we …

How to copy files & folders from Local system to Remote system in Linux? Read More
CentOS / RHEL

How to Recover root Password on RHEL/CentOS 7

January 4, 2019September 1, 2021 - by Prakash Subramanian - 3 Comments.

Have you forgot your root password for RHEL 7 and CentOS 7 systems? Want to reset a forgotten root password? If so, don’t worry, we are here to help you. …

How to Recover root Password on RHEL/CentOS 7 Read More
Apps

s-tui: A terminal tool to monitor CPU Temperature, Frequency, Power and Utilization in Linux

January 3, 2019October 28, 2019 - by Prakash Subramanian - Leave a Comment

By default every Linux administrator would go with lm_sensors to monitor CPU temperature. lm_sensors (Linux monitoring sensors) is a free and open-source application that provides tools and drivers for monitoring …

s-tui: A terminal tool to monitor CPU Temperature, Frequency, Power and Utilization in Linux Read More
General

How to install Rust programming language in Linux

December 14, 2018November 10, 2019 - by Prakash Subramanian - Leave a Comment

Rust is often called rust-lang.It is a general-purpose, multi-paradigm, modern, cross-platform, and open source systems programming language sponsored by Mozilla Research. It was designed to be achieve a goals such …

How to install Rust programming language in Linux Read More
Arch Linux

Arch-Audit : A tool to check vulnerable packages in Arch Linux

November 28, 2018November 11, 2019 - by Prakash Subramanian - Leave a Comment

We have to make the system up-to date to minimize the downtime and issues.It’s one of the routine task for Linux administrator to patch the system once in a month …

Arch-Audit : A tool to check vulnerable packages in Arch Linux Read More
Package Management

How to Identify the Parent Package Name of the Installed Sub Package Name

November 26, 2018November 20, 2019 - by Prakash Subramanian - Leave a Comment

I can understand what’s in your mind when you are reading this article title because I felt the same while seeing this mail. We got this request from one of …

How to Identify the Parent Package Name of the Installed Sub Package Name Read More

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