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Author: Siva

Mouse cursor pointer on guest VM is not working properly

December 25, 2019December 31, 2020 - by Siva - Leave a Comment

The Mouse Cursor on the guest VM on Redhat Linux KVM is not pointing or working properly. To resolve this issue, we need to add additional hardware on your guest …

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5 Ways to find Memory size in Linux

December 24, 2019December 31, 2020 - by Siva - Leave a Comment

[1] Using “free” Command   [2] Using the lshw command: [3] Using “dmidecode” command:   [4] Using /proc/meminfo Command:   [5] Using “top” command:

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Steps to Install Oracle Database 12c Release 2 in Redhat Linux 7.5

April 25, 2018May 3, 2018 - by Siva - Leave a Comment

In this Guide we will see on How to Install the Oracle Database 12c Release 2 in Redhat Enterprise Linux 7.5 Server. To Download the Oracle Database Installer, Visit the …

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How to Generate and Update SSL SAN Certificate in Linux

March 28, 2018June 17, 2019 - by Siva - Leave a Comment

What is SAN Certificate?    The Subject Alternative Name (SAN) are also called as multi-domain SSL Certificate, which allows you to identify different domain names or even IP Address with …

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Error: Can’t open display: localhost:10.0

July 27, 2017April 2, 2018 - by Siva - Leave a Comment

ISSUE: Server gives error while I try to execute the command xterm. RESOLUTION: a) Remove the loopback addressing in the host file entry. b) Comment or remove the wrong localhost …

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PuTTY X11 proxy: Authorisation not recognised: Error: Can’t open display: localhost:10.0

July 27, 2017April 2, 2018 - by Siva - Leave a Comment

ISSUE: I am trying to login to root as sudo user and launch the command “xclock” , I am getting the error message as “X11 Error while trying to launch …

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DNS Server Installation & Configuration – Step-by-Step in Redhat Linux/Centos 6.x

July 13, 2017April 2, 2018 - by Siva - Leave a Comment

  DNS (Domain Name System), also known as a nameserver, is a network system that associates host names with their respective IP addresses. For users, this has the advantage that …

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How to Download Videos in Linux Command Line

May 24, 2017April 2, 2018 - by Siva - Leave a Comment

“youtube-dl” is a python based script which is used to download the Videos from any of the URL’s:   1] How to Install the required “youtube-dl” package in the Linux …

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How to configure Sendmail in Linux

May 8, 2017April 2, 2018 - by Siva - Leave a Comment

Sendmail’s core purpose, like other MTAs, is to safely transfer email among hosts, usually using the SMTP protocol. However, Sendmail is highly configurable, allowing control over almost every aspect of …

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How to Register and Subscribe a system in Redhat Linux

May 2, 2017May 9, 2017 - by Siva - Leave a Comment

1) Register and automatically subscribe the system in one step:  [ NOTE:  user name and password are the same as your login credentials for Red Hat Customer Portal. 2) Register first …

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