• see what is installed (assuming php-mcrypt & php-mhash are installed

yum list installed | grep php | cut -d' ' -f1
typical result:
php.x86_64
php-cli.x86_64
php-common.x86_64
php-devel.x86_64
php-gd.x86_64
php-imap.x86_64
php-ldap.x86_64
php-mbstring.x86_64
php-mcrypt.x86_64
php-mhash.x86_64
php-mysql.x86_64
php-odbc.x86_64
php-pdo.x86_64
php-pear.noarch
php-xml.x86_64
php-xmlrpc.x86_64

• removes the 16 packages above (make sure there is nothing above you want to keep)
  • Check that only the packages above are listed before you press yes

yum remove php php-*

Resources:
http://www.reallylinux.com/docs/htaccess.shtml
http://www.javascriptkit.com/howto/htaccess3.shtml

Recent exploits that use phpMyAdmin highlight the need to keep this code up to date. For more info, see:
http://seclists.org/fulldisclosure/2011/Oct/690
http://www.dslreports.com/forum/r24640843-Botnet-Trend-phpMyAdmin-SSH-At...

#first set up the basic info.
#pma directory--could be: mydir=/usr/share
# using ln -sfn /usr/share/phpmyadmin/ /var/www/html/phpMyAdmin

mydir=/var/www/html  
phpMyAdmin=phpMyAdmin  #could be: phpMyAdmin=phpmyadmin
version="3.4.8"
#test with:
ls $mydir/$phpMyAdmin/config.inc.php

• Install NX (info from this page: http://www.nomachine.com/download-package.php?Prod_Id=355 )

  CentOS 6.0 64bit

  yum install wget #must be logged on as root
NXVER=3.5.0
CVER=7
NVER=4
SVER=5
ARCH=x86_64
NXURL=http://64.34.161.181/download
wget $NXURL/$NXVER/Linux/nxclient-$NXVER-$CVER.$ARCH.rpm
wget $NXURL/$NXVER/Linux/nxnode-$NXVER-$NVER.$ARCH.rpm
wget $NXURL/$NXVER/Linux/FE/nxserver-$NXVER-$SVER.$ARCH.rpm
rpm -i nxclient-$NXVER-$CVER.$ARCH.rpm
rpm -i nxnode-$NXVER-$NVER.$ARCH.rpm
rpm -i nxserver-$NXVER-$SVER.$ARCH.rpm

Documentation: http://www.centos.org/docs/5/html/yum/index.html

You can install repository priorities: http://wiki.centos.org/PackageManagement/Yum/Priorities
But a better solution might be to leave the extra repos disabled in the yum configuration and
install/update the packages you want from them with:
yum --enablerepo=reponame install packagename

Note that this now only works for the 64 bit version of CentOS

useful link: http://itscblog.tamu.edu/startup-guide-for-kvm-on-centos-6/

yum groupinstall "Virtualization*"
yum install dejavu-lgc-sans-fonts
echo "BRIDGE=br0" >> /etc/sysconfig/network-scripts/ifcfg-eth0
#now check it looks ok:
vi /etc/sysconfig/network-scripts/ifcfg-eth0

This is very "quick and dirty" using the CentOS gui tools as much as possible

-install server & open firewall to samba
-create office and supervisor groups and a /home/common folder
-create all users on server and make them part of office, (+supervisor)
-add all users to Samba with Windows names and passwords
-share all home drives and set user access on shares as appropriate
-set permissions in the directory at the root of each share, appropriate to users
-chmod g+w -R * #at the top level of each shared directory so groups can read and write

The process is very straightforward, with only one minor complication: the MBR and GRUB must be set up on both drives for alternate boot if one drive fails.
1. First setup a boot raid partition (100MB) on each drive
-Do this by creating a raid partition on each drive separately
-Then combine them into one RAID1 ext4 device mounted at /boot
2. Make two 4096GB raid partitions for the swap drive (adjust size as needed)
-Combine them into RAID1 of type swap (not mounted)
3. Next use the rest of the disks to make big raid partitions


yum install subversion mod_dav_svn
mkdir -p /var/www/svn/test #place to keep repository
svnadmin create --fs-type fsfs /var/www/svn/test #make a test one
chown -R apache.apache /var/www/svn
vim /etc/httpd/conf/httpd.conf #make sure the following two lines are there
LoadModule dav_svn_module modules/mod_dav_svn.so
LoadModule authz_svn_module modules/mod_authz_svn.so
#
vim /etc/httpd/conf.d/subversion.conf #and add the following

<Location /svn>
   DAV svn
   SVNParentPath /var/www/svn
   # Limit write permission to list of valid users.