To setup Subversion over Apache, check: http://wiki.centos.org/HowTos/Subversion

This page explains how to set svn props: http://svnbook.red-bean.com/en/1.1/ch07s02.html

• To set the $Id$ property, we do
  $ svn propset svn:keywords "Id" filename
• To set executable on a file, we do
  $ svn propset svn:executable on filename

Once in a while, I ran into this error with subversion:

svn: This client is too old to work with working copy ...

There are a couple of senarios:

1. The subversion is indeed too old, then we just upgrade it.

2. We temporarily tried a newer version of subversion. And the trial upgraded the format of the svn metadata.

3. We copied (rsync) the entire directory from another server that has a higher subversion.

In building an RPM .spec file, I wanted to create a user during pre-installation. So I had:

%pre
/usr/sbin/useradd -d /home/project/userid userid

This would fail if the directory "/home/project/" doesn't exist. My way to get aound this is to add a mkdir:

%pre
mkdir -p /home/project
/usr/sbin/useradd -d /home/project/userid userid

To create your own MySQL RPM package, you can:

1. Yum up some packages:
   yum install make php-pear php-devel httpd-devel
2. Install APC using pear (the pear installer is smarter than the pecl installer):
   When the installer asks about APXS, say ‘no’. 
   pear install pecl/apc
3. Tell PHP to load APC:
   echo extension=apc.so > /etc/php.d/apc.ini
4. Edit the file /etc/php.d/apc.ini, and add the following lines:
   apc.ttl="7200"
   apc.user_ttl="7200"
   apc.shm_segments="3"

YUM Prerequisites

Before we start, we need to have all the dependencies installed:

In general, the software version in CentOS are behind. It's just the way CentOS and Red Hat operate. They aim for long term support and stability.

But if you have to use a newer software package, you may find that some newer packages in CentOS's test repository, as listed in this page Available Repositories for CentOS. For CentOS 5 testing packages, you can find them in CentOS Test Repos.

How do I yum install SRPM from CentOS/Red Hat site, instead of manually download the srpm from one of the ftp website?

Install yum-utils

# yum install yum-utils

Get the dependency

If the package is already installed, use "rpm -qR <package-name>" to get the list of packages that this package depends on. For example:

$ rpm -qR openldap

If the package is not yet installed, use "yum  deplist <package-name>" to get the list of packages that this package depends on. For example: