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Top 25 Linux/UNIX Commands That Every Linux User Should Know

Linux and UNIX based operating system are very powerful. Although Linux interface is user friendly and easy to understand but there are lots of commands that every Linux user should know it.

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How to install and configure OSSEC Client/Agent Mode on Linux

OSSEC agent is a small program. Agent installed on the system to be monitored. It collects all information and forward it to the server for analysis and correlation. It also collect some

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Installing OSSEC on Linux and UNIX System

OSSEC is a free and open source centralised log monitoring and notification system. It is also an open source Host Based Intrusion Detection System (HIDS). With OSSEC we can monitor all types

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Install and Configure APF ( Advanced Policy Firewall ) to Secure Linux/UNIX System

APF Firewall Advanced Policy Firewall (APF) is an netfilter (Iptalbes) based firewall tools. We can configure APF easily with full featured firewall to secure and protect server and desktop connected to a

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Install Latest LibreOffice 5.3 Release on CentOS,RHEL,Fedora,Ubuntu and Debian Systems

Recently LibreOffice 5.3 has bee released on 1st February 2017.  LibreOffice is an open source and free source productivity suit for Linux,Windows and  Mac OS. You can use LibreOffice without paying any

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Change MySQL default Data Directory to New Location in Linux

When we install MySQL on Linux the default MySQL database created under /var/lib/mysql directory. If your database is small this might be OK because it does not take much space. But for

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Easy Steps to Clone Your HDD (Hard Drive) using dd

If you want to full backup of your hard drive you can do hard drives cloning. Hard drives cloning  is used for server maintenance. It is also useful for upgrading to bigger

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Check and Update max_connections value to fix MySQL Error: Too many connections

As a database administrator some time I have noticed on issue MySQL Error: Too many connections on database server. Which indicates that all available connections are in use by other clients. It

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Top 20 Crontab Examples to Schedule Tasks

Crontab is very important and useful to schedule jobs and task in Linux. As per our requirement we can schedule task to execute in background. We can also schedule command and scripts

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How to Extract/Open RAR File in Linux or UNIX System

In Linux or Unix operating system you will not see unrar command because unrar is not installed by default. RAR (Roshal Archive) is a compressed and archive file format. You will need

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How to install PHP 7 on RHEL/CentOS/Fedora/Ubuntu and Debian System

PHP is the scripting language which is used to generate dynamic web page. It contain TEXT,HTML and SCRIPT BLOCKS. Whenever user request for a PHP page through web browser than PHP script

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s3cmd – Installation and Management of AWS S3 Buckets on Linux System

s3cmd is used to upload, download, and manage directory and file with s3 (amazon simple storage). It is storage service in AWS. It is command line utility. In this article I am

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