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

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What is Ansible – Quick Overview

Ansible is an open source automation platform. …Ansible can help you with configuration management, application deployment, task automation. It can also do IT orchestration, where you have to run tasks in sequence and create a chain of events which must happen on several different servers or...

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Solaris SVM – How to check on a running machine which disk was used to boot.

It is often possible that we boot from a Solaris machine from one of the root mirror disk, and after sometime we forget current active disk. And the information of active boot disk is important while we perform SVM maintenance disks. This post will help you...

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Bash scripting – Nesting loops

A loop statement can use any other type of command within the loop, including other loop commands. This is called a nested loop. Care should be taken when using nested loops, because you’re performing an iteration within an iteration, which multiplies the number of times commands...

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DevOps Tool – What is Docker ?

Docker is the world’s leading software container platform. Developers use Docker to eliminate “works on my machine” problems when collaborating on code with co-workers. Operators use Docker to run and manage apps side-by-side in isolated containers to get better compute density. Enterprises use Docker to build...

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‘od’: Write files in octal or other formats

‘od’ writes an unambiguous representation of each FILE (‘-‘ means standard input), or standard input if none are given.  Synopses:      od [OPTION]… [FILE]…      od [-abcdfilosx]… [FILE] [[+]OFFSET[.][b]]      od [OPTION]… –traditional [FILE] [[+]OFFSET[.][b] [[+]LABEL[.][b]]] Each line of output consists of the offset in the...

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Part 1 – Mastering GREP – Introduction and Invoking

Introduction to Grep `grep’ searches input files for lines containing a match to a given pattern list. When it finds a match in a line, it copies the line to standard output (by default), or produces whatever other sort of output you have requested with options....

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