Aptitude is a front-end to the Advanced Packaging Tool (APT). It displays a list of software packages and allows the user to interactively pick packages to install or remove. It has an especially powerful search system utilizing flexible search patterns. It was initially created for Debian, but has appeared in RPM Package Manager (RPM) based … Read more
Htop is an interactive and real-time system-monitor process-viewer written for Linux. It is designed to replace the Unix program top. It shows a frequently updated list of the processes running on a computer, normally ordered by the amount of CPU usage. Unlike top, htop provides a full list of processes running, instead of the top resource-consuming processes. Htop uses color and gives visual information about … Read more
Secure shell (SSH) is a network protocol providing shell services on a remote machine via a secure channel. OpenSSH is an open-source implementation of the ssh protocol, allowing encrypted communication over a network via a suite of software. OpenSSH is developed by the Open BSD group and it is released under Simplified BSD License. OpenSSH features The … Read more
Scalpel based on Foremost an open source application developed to recover deleted information, Scalpel is significantly more Fast and efficient by reading database of header and footer definitions and extracts matching files or data fragments from a set of image files or raw device files. Scalpel is file-system-independent and can recover files from FATx, NTFS, ext2/3/4, HFS+, … Read more
YUM (Yellowdog Updater Modified) is an open source command-line package management tool for RPM (RedHat Package Manager) based Linux systems. YUM developed Seth Vidal under GPL (General Public License). Install software package using yum command To install package (example Firefox) run command in your terminall: # yum install firefox This command will also identify the dependencies automatically and install … Read more
The following article will describe how to configure a CentOS 5.x-based or Centos 6.x-based system to use Fedora Remi repository. These package repositories are not officially supported by CentOS, but they provide much more current versions of popular applications like PHP or MYSQL. Install the extra repositories The first step requires downloading some RPM files … Read more
This is quick guide howto delete/remove/clean old kernels on Fedora, CentOS, Red Hat (RHEL). I use here two kernel as example, if you want to keep other more or less, then adjust amount of installed kernels as you wish. Normally reason why you maybe want remove kernels is limited disk space, example on VPS servers … Read more
In this article, we will describe how you can check the integrity of your data using the md5sum utility under the GNU/Linux operating system. What is md5sum? md5sum is a tool generally used to check data integrity. It calculates and verifies 128-bit MD5 hashes, so you could know if a particular file is a valid … Read more
Saidar is a curses-based application to display system statistics. It use the libstatgrab library, which provides cross platform access to statistics about the system on which it’s run. Reported statistics include CPU, load, processes, memory, swap, network input and output and disks activities along with their free space. Here is the screenshot of Saidar in action: … Read more
Networking is an essential part Linux and it offer lots of tools and command to diagnose any networking problem. Networking Commands Example in Linux • finding host/domain name and IP address – hostname • test network connection – ping • getting network configuration – ifconfig • Network connections, routing tables, interface statistics – netstat • query DNS lookup name – nslookup • communicate … Read more