# rpm -q zlib zlib-devel
zlib-1.2.3-29.el6.x86_64
zlib-devel-1.2.3-29.el6.x86_64
#cp /usr/lib64/libz.so /usr/local/lib64/
# cd /usr/local/lib64/
# ln -sf libz.so libz.so.1
# yum clean all
# rpm -q zlib zlib-devel
zlib-1.2.3-29.el6.x86_64
zlib-devel-1.2.3-29.el6.x86_64
#cp /usr/lib64/libz.so /usr/local/lib64/
# cd /usr/local/lib64/
# ln -sf libz.so libz.so.1
# yum clean all