How to fix /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory

This will happen only on 64 bit systems, the cause is the fact that 32 bit libraries are missing from the system, so you can easily fix this issue by installing the 32 bit libraries on your system. So if you encounter this error /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory this is how you can fix it:
On any RPM based distribution (CentOS/RedHat/Fedora/Suse/Mandriva):

yum -y install glibc.i686

On any DEB based distribution (Debian/Ubuntu/Mint/Crunchbang):

apt-get update

apt-get install ia32-libs

How to fixed error bad ELF interpreter

I got the following error:
/usr/local/lsws/bin/lswsctrl: ./litespeed: /lib/ld-linux.so.2: bad ELF interpreter: No such file or directory
[ERROR] Failed to start litespeed!

While was fixed by typing
yum install ld-linux.so.2

Then after that installed type
/usr/local/lsws/bin/lswsctrl start

Setting a PPTP VPN in CentOS 5.6

Setting a PPTP VPN in Centos. I’m using the following commands in order to set the VPN:

yum remove -y pptpd ppp
iptables --flush POSTROUTING --table nat
iptables --flush FORWARD
rm -rf /etc/pptpd.conf
rm -rf /etc/ppp

rpm -Uvh http://poptop.sourceforge.net/yum/stable/rhel5/pptp-release-current.noarch.rpm
yum --enablerepo=poptop-stable install pptpd

mknod /dev/ppp c 108 0
echo 1 > /proc/sys/net/ipv4/ip_forward
echo "mknod /dev/ppp c 108 0" >> /etc/rc.local
echo "echo 1 > /proc/sys/net/ipv4/ip_forward" >> /etc/rc.local
echo "localip 172.16.36.1" >> /etc/pptpd.conf
echo "remoteip 172.16.36.2-254" >> /etc/pptpd.conf
echo "ms-dns 8.8.8.8" >> /etc/ppp/options.pptpd
echo "ms-dns 8.8.4.4" >> /etc/ppp/options.pptpd

pass=`openssl rand 6 -base64`
if [ "$1" != "" ]
then pass=$1
fi
read -p "User: " user
echo "${user} pptpd ${pass} *" >> /etc/ppp/chap-secrets

iptables -t nat -A POSTROUTING -s 172.16.36.0/24 -j SNAT --to-source `ifconfig | grep 'inet addr:'| grep -v '127.0.0.1' | cut -d: -f2 | awk 'NR==1 { print $1}'`
iptables -A FORWARD -p tcp --syn -s 172.16.36.0/24 -j TCPMSS --set-mss 1356
service iptables save

chkconfig iptables on
chkconfig pptpd on
service iptables start
service pptpd start

echo "VPN username is ${user}, VPN password is ${pass}"