Are you getting below exception while running ElasticSearch? [crayon-5f94e3d5288b1911437218/] Why is it ElasticSearch is not allowed to run as root? Elasticsearch is a process, which I believe …
Linux and Unix Tutorials Archives...
Beginners guide to the UNIX / Linux operating system. I do work on Linux console terminal every day. Some of my favorite tips and tutorials which includes Shell script and Bash programming.
Ansible: How to Execute Commands on remote Hosts and get command result (log) back?
On Crunchify, we have published quite a few Ansible articles before which includes, installation of Ansible, Copying file from one host to remote host and more. In this tutorial we will go over …
Ansible: How to copy File, Directory or Script from localhost to Remote host?
As a part of IT management department, folks deal with lots of scripts and command line tools. I'm sure you face day to day situation in which you have copy files or scripts to thousands of remote …
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How to install Ansible on Linux Ubuntu OS?
Let's get started on how to install Ansible on Linux Ubuntu and macOS. What is Ansible? Ansible is an all in one IT solution. It's an IT orchestration engine which automates configuration …
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Linux: How to Generate TimeoutException for a specific IP using TC qdisk and netem command?
TC is a linux command using which you could manipulate traffic control settings. In Linux, TC command is used to Show or Manipulate traffic control settings. Why do you need to add small …
systemctl start/stop service: How to Setup Upstart Script and Respawn Process in Ubuntu, CentOS, Redhat Linux
How to write startup script for systemd? systemd is the latest service management utility in all latest version of Linux distribution such as Ubuntu OS, Redhat OS, CentOS. That's why Ubuntu 17.4 …
How to change Default Java /JDK Version and ClassPath in Linux using .bash_profile?
When you install Java with default apt install command on Ubuntu or CentOS Linux OS then it will install Java under default folder /usr/bin/java. First thing first. How to install or upgrade …
My Favorite Linux Commands – List of Top 25+ Basic Linux Commands and Cheat Sheet
I've been working on Linux environment since very long time and recently explored a lot more commands. In this tutorial we will go over some most commonly used Linux Commands for your handy …
Log File Tailer (tail -f) implementation in Java – Best way to tail any file programmatically
File operations using Java are my favorite part. There are number of tutorials you may have seen on Crunchify like append data to file, read data from file, read and parse JSON file, read …