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.

Tuesday, July 16, 2013

Safe SSH restart cPanel

11:38 AM Unknown No comments

If you can access WHM/cPanel of the server and cant SSH into the server you can try this method.


# Restart SSH Deamon in Safe Mode using HTTP
http://X.X.X.X:2086/scripts2/autofixer

# Restart SSH Deamon in Safe Mode using HTTPS
https://X.X.X.X:2087/scripts2/autofixer

# type/enter script name
safesshrestart

You can also try this, do to not forget to login to WHM first and then COPY and PASTE this to address bar of your web browser:
# Direct URL for SSH Deamon Restart in Safe Mode using HTTP

http://X.X.X.X:2086/scripts2/doautofixer?autofix=safesshrestart
# Direct URL for SSH Deamon Restart in Safe Mode using HTTPS

https://X.X.X.X:2087/scripts2/doautofixer?autofix=safesshrestart
NOTE: do not forget to replace X.X.X.X with your domain name or server ip address.

When executing this cPanel with kill currently running ssh server and run it with own/default configuration file located at /var/cpanel/safe_sshd
/usr/sbin/sshd -f /var/cpanel/safe_sshd

After this if you restart SSH deamon the SSH will go back to its original settings.
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Attracta SEO and Marketing Tools Upgrade in cPanel/WHM

11:29 AM Unknown 1 comment




For those customers who were using Attracta version 2.23 and up, you may have been updated to Attracta 2.29 already via a cPanel update. The version of Attracta running on the system is available at /var/cpanel/attracta/version or at the bottom of Attracta's WHM interface.

To update to the latest Attracta, you can run the following commands via SSH as root:

wget -N www.attracta.com/static/download/cpanel-install

sh cpanel-install



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