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 […]
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, […]
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 […]
Today, we will see a trick to calculate the playback speed of a hard drive, Linux and specifically with Debian in this tutorial. For this, we will rely on fdisk to list the hard drives, and hdparm for the calculation of performance. First, we are going to see procedure with hdparm so let’s start by […]
Use Convert-WindowsImage and create a Windows 8 VM quickly. Written in PowerShell, Convert-WindowsImage is a tool to quickly create a Windows installation on a VHD virtual hard disk or VHDX, from a Windows installation ISO file. This tool can be used from the command line or GUI, it’s your choice. No installation required since it’s […]
As we all know that recently CentOS released a new version “7”, this new stable version has its own share of change and among them, the fact that the ifconfig control no longer present in the native system. So if you have old habits, then you may want to find this option in this newer […]
Lsyncd combines the advantages of inotify with the functionality of Rsync. This means lsyncd holds a remote copy of a directory permanently to the state that corresponds to the local directory. Technically lsyncd begins at the start with a full Rsync run, but sets simultaneously on all the monitored directories and subdirectories inotify watches. All […]
Storage solutions, professionals, etc… always heavily loaded with RAID configuration. But do you know this technology. I guess, yes. However, today I am going to ask some basic questions about RAID; below each question you will see 3 options + correct answer. At first glance it will looks quite boring or rather uninteresting but did […]
Today, we will see the implementation of Apache as a reverse proxy in the front-end of another apache server that will be its back-end. We will use this module Mod_Proxy and Mod_Proxy_HTTP. We will just try to redirect the flow arriving at a destination server of a domain name to a server located further upstream […]
In Linux, a file “world writable” is a file which everyone can write. These files can be used as sensitive by people who did not aim at the base to write data to the system or out of a given directory. The world writable files are more dangerous when they can run by anyone on […]