update glibc to 2.17 for CentOS 6

glibc-2.17_centos6.sh

#!/bin/bash

# update glibc to 2.17 for CentOS 6

GLIBC=glibc
OS=el6
SERVER=https://copr-be.cloud.fedoraproject.org/results/mosquito/myrepo-el6
VERSION=2.17-55
FULL_VERSION=$GLIBC-$VERSION.fc20
X64=x86_64
I386=i386
I636=i686
REPO_32=epel-6-$I386
REPO_64=epel-6-$X64

SERVER_32=$SERVER/$REPO_32/$FULL_VERSION
RPM_32=$VERSION.$OS.$I636.rpm
SERVER_64=$SERVER/$REPO_64/$FULL_VERSION
RPM_64=$VERSION.$OS.$X64.rpm

# Packages
P_1=$GLIBC
P_2=$GLIBC-common
P_3=$GLIBC-devel
P_4=$GLIBC-headers
P_5=$GLIBC-static
P_6=$GLIBC-utils
P_7=nscd

# Required as dependency of glibc-utils
sudo yum install --assumeyes gd

# 64-bit
sudo rpm -Uvh --force $SERVER_64/$P_1-$RPM_64 $SERVER_64/$P_2-$RPM_64 $SERVER_64/$P_3-$RPM_64 $SERVER_64/$P_4-$RPM_64 $SERVER_64/$P_5-$RPM_64 $SERVER_64/$P_6-$RPM_64 $SERVER_64/$P_7-$RPM_64
# Print out versions
strings /lib64/libc.so.6 | grep GLIBC

# 32-bit
# sudo rpm -Uvh --force $SERVER_32/$P_1-$RPM_32 $SERVER_32/$P_2-$RPM_32 $SERVER_32/$P_3-$RPM_32 $SERVER_32/$P_4-$RPM_32 $SERVER_32/$P_5-$RPM_32 $SERVER_32/$P_6-$RPM_32 $SERVER_32/$P_7-$RPM_32

@AdrianoMele, unfortunately I don't know the answer. If you find out how to revert to an older version, please post the steps.