Amazon Corretto cron job

#!/bin/bash

latest_link="https://corretto.aws/downloads/latest/amazon-corretto-17-x64-linux-jdk.tar.gz"
sig_link="https://corretto.aws/downloads/latest/amazon-corretto-17-x64-linux-jdk.tar.gz.sig"
dest_dir="/usr/local/openjdk"
jdk="/tmp/corretto-17.tgz"
pub="/tmp/corretto.pub"
sig="/tmp/corretto.sig"

# tarball
wget -qc ${latest_link} -O "${jdk}"

# pub key - comment after import
# wget https://corretto.aws/downloads/resources/17.0.0.35.1/B04F24E3.pub -O "$pub"

# sig
wget -qc ${sig_link} -O "${sig}"

# verify
gpg --verify "${sig}" "${jdk}" &>/dev/null || { echo "GPG verify returned an error for ${jdk} (maybe pub key not imported?)"; exit 1; }

# remove old directory
cd ${dest_dir} && find . -maxdepth 1 -type d -name 'amazon-corretto-17.*x64'  -exec rm -rf '{}' \; || { echo "Error removing amazon-corretto directory. terminating."; exit 1; }

# untar latest jdk
tar xfz "${jdk}"