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Linux Support, Oracle Linux, Red Hat Enterprise Linux, SUSE, Oracle Unbreakable Enterprise Kernel and the Oracle Unbreakable Linux Support Program (ULN) resources, news, and support articles.

How to split an image for visual effects

Suppose that you've just taken a panorama photograph with your fancy digital camera. You can display the picture as is on your blog. Or you can be a little bit more creative. How about splitting it up into 3 rectangular pieces?

Speedup MySQL InnoDB shutdown

Depending on the size of the databases you have in mysql innodb the time it takes mysql to restart can be horribly slow (for very big innodb databases). There are some tricks that can speed this up, but the most effective one that I’ve found and use all the time in similar situations is to pre-flush the dirty pages right before shutdown; this can be done like this:

Brightness Controls not working on Dell Inspiron Laptop with Intel Graphics

On one of my personal laptops (Dell Inspiron 17R), my attempts at using the function key combinations to change the brightness did not yield any results on Fedora 20, Linux Mint 17, or Ubuntu 14.10. The LCD brightness was stuck at "can barely see, but must conserve battery because I'm stuck on an island mode" (not a real setting, but might as well be).
The system has an integrated Intel graphics card, and if you're not sure what your system has you can check it here:
Run the command below in terminal to know what video card is used for the backlight/brightness:

Install GCC 4.8.1 and other Scientitic Packages via Yum on CentOS

Do take a look at Linux @ CERN for the documentation on how to use yum to install devtoolset which contain the following packages. The latest version for CentOS 6 is devtoolset-2.1. Here is a summary of the Linux @ CERN
CentOS 6 / SL 6
Developer Toolset 2.1 provides following tools:

Configuring Python cx_Oracle and mod_wsgi on Oracle Linux

The Web Server Gateway Interface (WSGI) is a standardized interface
between web servers and Python web frameworks or applications. Many
frameworks including Django support WSGI.

This post is a brief how-to about configuring Apache's mod_wsgi
with Python's cx_Oracle driver for Oracle Database. The steps are for
Oracle Linux.

  1. Download Instant Client Basic & SDK ZIP files from href=""
    >OTN. For cx_Oracle, use the ZIPs, not the RPMs.

Ansible – Create user with password in Ubuntu/Linux

Ansible is an open-source software platform for configuring and managing computers.
In this article I will explain how to create new user with password.
Ansible has a user module to create a user. You can refer user module docs for more details.

Hard Drive Data Recovery

This article discusses hard disk data recovery on Linux using dd and fdisk.

I recently left for a trip to South America, and took my trusty Intenso 320GB external drive with. Well aware that I’ve dropped it a couple too many times and that it was beginning to click more and more often during regular usage, I took a full backup before leaving. There’s nothing critical on the drive that I don’t have additional copies of elsewhere, however losing it would be a pain.

Google launches standalone Messenger app for Android

Google has released its new standalone messaging app for Android. Messenger from Google is a communications app that helps users send/receive SMS and MMS messages to/from any phone.

Some cleanup in upcoming rsyslog v8

Historically, the rsyslog source tree contains a lot of seldomly-used and exotic modules. Some of them even don't work at the moment. I kept them inside the tree so that they could serve as a sample for folks trying a similar things. However, there has been discussion on the rsyslog mailing list that all of this clutters up rsyslog and makes it a bit hard to understand which modules are well maintained, which are not, and which actually do not work or just serve an exotic border case.

Platform LSF – Controlling Hosts

1. Closing a Host
# badmin hclose hostid
Close hostid ...... done
2. Opening a Host
# badmin hopen hostid
Open hostid ...... done
3. Log a comment when closing or opening a host

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