[deprecated] Bash script to upgrade Vault to the latest release on Linux

vault-upgrade.sh

#!/bin/bash

url="https://releases.hashicorp.com/vault"
latest_version=`curl -s ${url}/ | grep -A6 "<a href=\"../\">../</a>" | grep vault | cut -d '_' -f 2 | cut -d '<' -f 1`
bin="/usr/local/bin/vault"

install () {
  cd /tmp && \
  /bin/wget -q ${url}/${latest_version}/vault_${latest_version}_linux_amd64.zip && \
  /bin/unzip -qq vault_${latest_version}_linux_amd64.zip
  sudo cp vault ${bin} && sudo cp vault ${bin}-${latest_version}
} 

if [ ! -f "${bin}" ]; then
  echo "Installing Vault v${latest_version}"
  install && echo "Vault v${latest_version} installed"
else
  cur_version=`${bin} version | grep Vault | cut -d 'v' -f 2 | awk '{print $1}'`
  echo "You're using Vault v${cur_version}"
  
  if [ "${latest_version}" != "${cur_version}" ]; then
    echo "A new Vault release is available: v${latest_version}"
    echo -n "Do you want to install this new release (y/n)? "
    read answer
    if [ "$answer" != "${answer#[Yy]}" ]; then
      install && echo "Vault updated to the latest release"
    else
      echo "Skipped the Vault update to v${latest_version} release"
    fi
  else
    echo "You're already running the latest release"
  fi
  
fi