replace fleet with other version

fleet-replace

#!/bin/bash
fleet_location=""
fleetctl_location=""
version=""


delete_existing_dl(){
  rm -Rf ./fleet-v${1}*
}

download(){
  wget https://github.com/coreos/fleet/releases/download/v${1}/fleet-v${1}-linux-amd64.tar.gz
}

extract(){
  tar xvzf fleet-v${1}-linux-amd64.tar.gz 2> /dev/null
  rm fleet-v${1}-linux-amd64.tar.gz
}

which_fleet(){
  fleet_location=$(which fleet)
  fleetctl_location=$(which fleetctl)
}

fleet_version(){
  if [[ ! -z $fleetctl_location ]]; then
    version=$(fleetctl --version | sed -E 's#fleetctl version ##')
  fi
}

fleet_link(){
  sudo rm ${fleet_location}
  sudo rm ${fleet_location}d
  path="$(pwd)/fleet-v${1}-linux-amd64/fleet"
  if [[ ! -f $path ]]; then
    path="$(pwd)/fleet-v${1}-linux-amd64/fleetd"
  fi
  sudo ln -s ${path} ${fleet_location}
  sudo ln -s ${path} ${fleet_location}d
  
}
fleetctl_link(){
  sudo rm ${fleetctl_location}
  path="$(pwd)/fleet-v${1}-linux-amd64/fleetctl"
  sudo ln -s ${path} ${fleetctl_location}
}

# find versions & location of fleet
which_fleet
fleet_version

if [[ -z $version ]]; then
  echo "Fleet not installed, installing"
  download $1
  extract $1
  # coreos locations
  fleetctl_location="/usr/bin/fleetctl"
  fleet_location="/usr/bin/fleet"
  fleet_link $1
  fleetctl_link $1
else
  echo "Fleet: ${fleet_location}"
  echo "Fleetctl: ${fleetctl_location}"
  echo "Version: ${version}"
  read -p "Replace ${version} with ${1}? " replace
  if [[ "$replace" == "y" ]]; then
    delete_existing_dl $1
    download $1
    extract $1
    fleet_link $1
    fleetctl_link $1
  fi
fi