Linux in Supercomputers and Robotics

90% of the world's most powerful supercomputers using an operating system GNU / Linux, in fact, the top ten of supercomputers use Linux. In fact, the penetration of Linux in data centers is very high, 33.8% of the world runs on Linux servers compared to 7.3% does so in a Microsoft operating system. For example, Google's servers run on Linux, like the server hosting the website of the White House.

Linux Earlier Years

The first commercial distribution GNU / Linux was Yggdrasil was launched Lice-CD format in 1992. Red Hat was one of the first distributions to settle within companies and data centers in 1999. Debian was one of the first GNU / Linux that was constituted and organized as a community of developers.

Linux OS used in Major Applications / Services

Linux is present in highly critical applications such as Japan's bullet trains, traffic control, San Francisco, the New York Stock Exchange, CERN, many air traffic control systems or control of nuclear reactors of submarines and ships many nuclear war.

Expanding Everyday

Linux has more than 9.2 million lines of code and this amount grows 10% each year. Of the 9.2 million lines, the kernel itself accounts for 5% and 55% drivers. Add lines 4500, 1800 and 1500 are removed are changed every day.

Widely Used

Linux is now one of the most widely ported operating system kernels, running on a diverse range of systems from handheld computers to mainframe servers.

Showing posts with label Server. Show all posts
Showing posts with label Server. Show all posts

Monday, September 17, 2012

Maldet Install, Setup and Syntax

10:13 AM Unknown No comments


Maldet is a security software usually used in linux to scan for vulnarabilities or malware check. To install maldet follow the steps below:

cd /usr/local/src/
rm -vrf maldetect-*
wget http://www.rfxn.com/downloads/maldetect-current.tar.gz
tar -xzf maldetect-current.tar.gz
cd maldetect-*
sh ./install.sh
maldet --update-ver
maldet --update


You may also want to consider activating the many features of maldet, for example:

 email_alert=1
 email_addr="root"
 quar_hits=1
 scanthreads=5
 maxfilesize="1024k"

To edit these options, $EDITOR /usr/local/maldetect/conf.maldet
To scan all users public_html give the command below:
maldet -a /home?/?/public_html



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Tuesday, February 21, 2012

Installing Clam AntiVirus

11:06 AM Unknown No comments

Clamwin is an Open Source Software and comes with open source code, absolutely free of charge. All you have to do is download it and run it. It is based on the Clam AV technology for UNIX and has been primarily designed to guard and scan email on mail gateways.

To Install Clam AntiVirus on a linux (RHEL, CentOS) server without control panel:

Download the repo file:
 wget http://www.linux-mail.info/files/dag-clamav.repo
This will save a file  dag-clamav.repo in the current location.

Place the repo file in the correct repo location:
mv dag-clamav.repo /etc/yum.repos.d

Use yum to install
yum install clamav clamav-devel clamd

To update the virus definitions type:
 freshclam

To use this anti virus type:
 clamscan

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Sunday, February 19, 2012

Copy files and folder via FTP to Linux Server (ncftp)

3:43 AM Unknown No comments

Check if ncftpget is already installed in your server by typing either one of the commands below.
ncftp -h or which ncftpget

If ncftpget is not installed please follow the steps below to install it.
 1.  rpm -Uvh http://download.fedora.redhat.com/pub/epel/5/i386/epel-release-5-4.noarch.rpm
2. yum list *NCFTP*
3. yum install ncftp

Please use this command to copy files to the server from an ftp server.
ncftpget -R -v -u -p''


Please find an example below
ncftpget -R -v -u frenchcastles -p'ss135623!@#' 76.34.45.123 /home/files ./*

./* indicate all files from root of ftp server.
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