The other day we were toying around with filtering out the horn noises from the World Cup matches streaming from ESPN. We found some instructions dealing with Fedora but many of the packages that were recommended were not available for CentOS. One of those packages was jack-rack which can be downloaded and installed using the information below.
Recently I was doing some testing with various audio settings on a CentOS Linux desktop and found out fairly quick that many of the packages I needed were not available. After some research I located a repository from Stanford’s Center for Computer Research in Music and Acoustics called Planet CCRMA which is pronounced karma. Below I describe how to install the CCRMA repo on CentOS Linux so you can use yum to install various audio RPM’s.
I have been needing to upgrade the PostgreSQL servers at my work for awhile now and was finally forced to do so after needing some of the features available with PostgreSQL 8.4.X. Currently we are running PostgreSQL 8.3.10 which is super old but it is definitely not the latest stable release available. One thing I am looking forward to testing is the improvements to the vacuum process. Over the past two years I have become a lot more familiar with Postgres and one thing that has been disappointing is the downtime involved in reclaiming disk space via data removed from PSQL database tables. The full vacuum process, which is required to reclaim disk after deleting data from a table, in 8.3 requires a lock on tables which essentially causes downtime. When you are dealing with large tables over 10GB in size this can take days to complete. Follow the directions below to first backup all of your PostgreSQL data, remove the current PostgreSQL installation, and then install PostgreSQL 8.4 on a CentOS Linux server.
Installing the EPEL repository on CentOS Linux is easy to do so the below is simply a reference point if needed by anyone. EPEL stands for Extra Packages for Enterprise Linux and is a community based repository that was created for add-on Fedora Linux packages. There are many cases where installation instructions assume that the EPEL repo is already installed so if you run into an error because of a missing package or dependency package the EPEL repository is a great place to start. Below I have listed the i386(32-bit) and x86_64(64-bit) EPEL repository package list links which will allow you to easily verify that the packages you need are available before installing the EPEL repository. After the EPEL repository package list links there are separate commands listed to install the EPEL repository on 32-bit CentOS Linux 5.X and to install the EPEL repository on 64-bit CentOS Linux 5.X.
The other day I needed to install ionCube Loader for encrypted PHP code to run on a CentOS Linux server but was initially unable to find a repository that included the php-ioncube-loader RPM package. After a couple minutes I remembered that I had previously used the Atomic repo to install PHP Zend Optimizer and so I thought I would check that repository to see if an ioncube RPM package was available as well. Below I display the search for a repository that includes an ionCube Loader RPM package along with installing the package on a CentOS Linux server.