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Linux Articles

Installing OpenShift Origin in a Home Lab

We are going to demonstrate how quickly get us up and running with a “lightweight” OpenShift Origin environment in a virtual home lab. Origin is the upstream community project that powers OpenShift. Built around a core of Docker container packaging and Kubernetes container cluster management. OpenShift Origin is a distribution of Kubernetes optimized for continuous application […]

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Provisioning WebLogic Server in less than 1 minute using Docker

We are going to demonstrate how to provision Oracle WebLogic Server in less than 1 minute Using Docker running on Ubuntu. Prerequisites To follow this tutorial, you will need Ubuntu 64-bit up and running. We will be using Ubuntu version 16.04 in our fancy VirtualBox sandbox machine. This is because Docker requires a 64-bit version of Ubuntu as […]

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Installing Oracle Linux 7 for Oracle software deployments

This demo shows installation process of Oracle Linux 7 in virtual machine (VirtualBox) and basic OS configuration for further Oracle software deployments e.g., Oracle Databases, WebLogic Servers. 1. Download Oracle Linux ISO image from Oracle Software Delivery Cloud

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Shell script: Copy files from source to target directory

Simple shell script to search and copy files from one folder to another. Pretty useful if there is a need to copy/move files from one folder to another (e.g., Dropbox) in case that running program cannot be configured to write output files to multiple locations. The existing files in the destination folder are skipped. However bear in mind that this […]

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Altering network configuration and hostname in Oracle Linux 6

A prerequisite for this exercise is running Oracle Linux 6. Installation and configuration has been described in this article:  Installing Oracle Linux 6 and preparing for Oracle Software installations. Clone and power up virtual machine and connect to the server (for example: using putty) Cloning virtual machine in Oracle VirtualBox involves the fallowing steps: TIP: To power up virtual […]

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Installing Oracle Linux 6 and preparing for Oracle Software installations

This article describes installation of Oracle Linux 6 and initial preparation for further Oracle software installations, like Oracle Databases, WebLogic Servers, Fusion Middleware software, clustered infrastructures. It will serve as a seed OS which I will be cloning for further Oracle software installations without a need to install OS from scratch each time I need a […]

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Installing Oracle Linux in VMware virtual machine

What is Oracle Linux? Oracle Linux is an open source operating system available under the GNU General Public License (GPL) and is available for free download. Oracle Linux includes two kernels: Unbreakable Enterprise Kernel, tracks mainline Linux kernel closely, and offers the latest features and tested performance and stability The Red Hat Compatible Kernel, compiled directly […]

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A bit of fun with cut, paste, join and sort in Linux

1. cut – Removes sections from each line of files. Prints selected parts of lines from each file to standard output. Default separator is a “Tab” sign. Imagine we’ve got a file file_numbers.txt, which consist of three columns: col_1 col_2 col_3   one two three   four five six   seven eight nine   ten […]

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How To Setup SSH equivalence , password-less SSH authentication

Imagine you have to administer more than one Linux hosts in your network, or clustered environment. You would like to connect to each host in your environment in a secured way, but without providing the password each time. Here’s is a quick guide how to configure your hosts for password less authentications. We have host-1 and host-2 […]

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Managing VMware images from command line using vmrun tool

Managing VMware images in VMware Server 2.x can be done in several ways. One way is to utilise Web based GUI and the second way is the command line. To login to the Web based GUI (SSL) https://hostname:8333/ui/# http://hostname:8222/ui/# (How to disable redirect to SSL could be found here) Let’s get focused on Shell commands – […]

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