Install UnlimitedJCEPolicyJDK7.zip on RHEL/CentOS

UnlimitedJCEPolicyJDK7-RHEL.sh

# See here for JDK 8: https://gist.github.com/bmaupin/87631863d55e2accc05ca7759247f887
# See here for test to make sure this works: https://gist.github.com/evaryont/6786915

if grep -q -i "release 6" /etc/*release; then
    jce_primary_link_dir=/usr/lib/jvm/jre-1.7.0-oracle.x86_64/lib/security
elif grep -q -i "release 7" /etc/*release; then
    jce_primary_link_dir=/usr/lib/jvm/jce-1.7.0-oracle
fi

wget \
    --no-cookies \
    --no-check-certificate \
    --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" \
    -O UnlimitedJCEPolicyJDK7.zip \
    http://download.oracle.com/otn-pub/java/jce/7/UnlimitedJCEPolicyJDK7.zip
jar xvf UnlimitedJCEPolicyJDK7.zip
# Copy them to an alternate location and use update-alternatives so they don't
# get overwritten when Java is updated
mkdir -p /usr/lib/jvm-private/java-1.7.0-oracle.x86_64/jce/unrestricted
/bin/cp -f UnlimitedJCEPolicy/local_policy.jar /usr/lib/jvm-private/java-1.7.0-oracle.x86_64/jce/unrestricted
/bin/cp -f UnlimitedJCEPolicy/US_export_policy.jar /usr/lib/jvm-private/java-1.7.0-oracle.x86_64/jce/unrestricted
update-alternatives \
    --install \
    $jce_primary_link_dir/local_policy.jar \
    jce_1.7.0_oracle_local_policy.x86_64 \
    /usr/lib/jvm-private/java-1.7.0-oracle.x86_64/jce/unrestricted/local_policy.jar \
    900000 \
    --slave \
    $jce_primary_link_dir/US_export_policy.jar \
    jce_1.7.0_oracle_us_export_policy.x86_64 \
    /usr/lib/jvm-private/java-1.7.0-oracle.x86_64/jce/unrestricted/US_export_policy.jar
rm -rf UnlimitedJCEPolicy UnlimitedJCEPolicyJDK7.zip