Author Archives: Paul Lopez

About Paul Lopez

Paul Lopez, a technology writer and sales & marketing executive at, a cloud & dedicated server hosting company based in New Jersey.

How to control bandwidth in Linux?


Trickle and WonderShaper:

When we start working on a lot machines specifically Linux servers, it is interesting to know how we can control or limit the bandwidth. This can be useful in different contexts, for an instance, as part of a dedicated server or shared server infrastructure where we can control a download or app taking all traffic over other network users. It could very well put QoS or other technologies, but the tools that we are going to see in this post allow putting a limitation on the bandwidth which normally used pretty quickly and easily in Linux. read more

How Does R1Soft Backup Work?

The Internet is Internet and many things can happen so it’s good to have an off-site backup solution like R1Soft for data protection. bodHOST’s R1Soft system will enable you to restore files and folders to your account at barely a few clicks. The R1Soft console panel offered by us can help you to restore files, folders or even entire disk from Disk safe panel. Even, I would say R1Soft backup solution is the bee’s knees. Why I am saying this? Check the below steps and decide whether my claim is right or wrong! read more

Linux Server Security Audit with LBSA

linux_servers First of all we will see what LBSA is: The security of Linux system often requires regular testing with various settings and configurations that are also often common to several systems. For an instance, you have large Linux server farm on which you want to change the default port for the SSH service, it may be useful to have a tool that allows to quickly check whether the configuration has been made. This is where LBSA (Linux Security Audit Basic Script) can be used.

This is a bash script (.sh) that performs a set of verification on system security in order to establish a final report on areas for improvement. The goal is to have a set of security issue checked to establish a base on the safety of the system. read more

SquirrelMail Time out issue

If you are using Squirrel mail and often encounter a disconnection problem with SquirrelMail interface, then you need understand that SquirrelMail session gets disconnected after a certain period of time. This usually happens around 10-15 minutes after logged into the interface without clicking on any buttons or not performing any actions.

For example,

You are composing a very long email or staying away from the computer for several minutes or a few hours then it attempts to log out from mail interface. read more

Domain pointing to external MX on Plesk

If you are using external MX record and also using Linux environment for your Plesk server, then you need tweak settings in Plesk panel. To change the settings follow the below guidelines:

It will take some time to propagate the changes made in the DNS.

The above settings must eliminate the entry for the domain from the below two “qmail” server configuration files.

After exclusion of above two entries, your Plesk server will search for the external email server for the domain by fetching MX records from its DNS. read more

How to optimize image online in Linux?


Online image optimization in Linux:

Image compression may have an interest in many situations. For example, while writing a web article in which we need compressed images to reduce the total weight of a web page. Image compression may also need while sending an email. For this it is worthwhile to know how to do it quickly from command line. So here we will see how to lighten images in PNG, JPEG/JPG format with various tools.

PNG images optimization with pngcrush

First we need install pngcrush, in Debian we will use the below command:

For CentOS and RHEL, use this syntax:

Once installed, pngcrush is very easy to use, for example:

Here, “-brute” allows us better optimization of the image, “-e” compress the original image (Note: after specifying “-e” mention the name for compressed image which will be the output of the tool). read more

Hyper-V Free Monitoring Tool

Veeam Task Manager for Hyper-V is a monitoring utility for a Hyper-V host and its virtual machines. The objective of this free tool is to provide a task manager that lets you to view the use of resource in real-time, both for the host and VMs it contains.

It approaches the task manager to Windows, and in my opinion it is more appropriate that the information provided in the Hyper-V Manager.

What you should know before downloading Veeam Task Manager?

Before you begin, you should know that it needs to be installed on a client computer, the application requires operating systems > Windows 7, Windows 8, Windows 8.1, Windows Server 2012, Windows Server 2012 R2. read more

Automatically logoff a disconnected windows user

We come across with a query of automatically logging of a Windows user which is already disconnected. If you are also facing same issue, then check the following guidelines. Note: the steps for this starts from “Windows Group Policy”.

1) Log in to your Windows Server
2) Open “Group Policy” by running command through “Run” tab -> gpedit.msc
3) On the left side you will see “Administrative Templates” – Click on that option

disconnected windows user_1

4) On the right side there is “Windows Components” – Click on that file.
5) Now click on “Terminal Services” read more

Linux process CPU usage monitoring

In this tutorial we will see how to collect CPU usage of a Linux process.

The main purpose behind this query is supervision or debugging. It would be convenient if you know how to retrieve CPU usage of a particular Linux process. It is often noticed people only check overall CPU usage on a machine, but don’t bother to analyze, which process is consuming more CPU time. Once they start focusing on which process consumes more CPU, then it will be helpful for them to optimize that process.

So in this tutorial we will see how to check usage of specific Linux process: read more

Explore the Debian packages with Apt-file

Debian package management Apt-file to explore the Debian packages: when one uses only the command line on Linux, there are tools to have in your pocket, so apt-file for exploring the Debian packages (.deb) and finds a package according to a file. Here, we are going to see how to use it:

First we will see the installation and preparation of apt-file: Apt-file is simply installed on Debian via deposits, it will capture the following command.

It will then prepare apt-file to be used in fulfilling its cache; this requires a simple command line that I’ve mentioned below: read more