How To Install Microsoft SQL drivers and unixODBC 2.3.0 on RHEL 6 64 bit

Microsoft’s SQL drivers can not use the 2.2.14 unixODBC installed with RedHat 6. It requires 2.3.0 which requires compiling and installing from source. First download the latest unixODBC from . Put tarball in /tmp and extract. Extract the tar ball # tar xvzf unixODBC-2.3.0.tar.gz Change to the unixODBC-2.3.0 directory adn set a few compiler variables, configure, make and install... read more

How To Manually Uninstall Oracle Client on Linux

You know how it goes, you try running the uninstall process and no matter how hard you try it just doesn’t go as planned. So, it is time to get the hammer. Well it just happened to be one of those moments with trying to remove a botched Oracle 11g client install on RHEL 6. Needed it removed so a clean install could be performed, but needed to know where all the hiding places were. First stop any... read more

Monitoring Filesystem Events with incron on RHEL 6

Have you ever wanted to know when a file is changed or accessed by the system or user? There is a program that does just that task called Inotify cron (incron). Incron is for monitoring filesystem activity. It consists of a daemon and a table manipulator. You can use it a similar way as the regular cron. The difference is that the inotify cron handles filesystem events rather than time periods incron... read more

Useful RPM and YUM Commands

RPM and YUM commands are used daily by RHEL/CentOS/Fedora Administrators and sometimes having a few more tricks up you sleeve for getting information from the command line are always handy to have.  Listed in this post are 14 useful commands for RPM and YUM. 1. Getting rpm to display architecture This one is a pretty simple tip, and very useful especially for people using x86_64 systems. Just one line in... read more

Install Tomcat 7 and Java 1.7 on CentOS 6 RHEL 6

In this post we will cover how to install the Apache Tomcat 7 and jre 1.7 on CentOS 6 and RHEL 6. This process doesn’t use the rpm’s from the Redhat repositories, but uses the latest tar balls from Apache and Oracle. We will also be using service accounts to control Tomcat and its processes. Download latest Tomcat from Version 7.0.40 is the curent... read more

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