Check the numbers of COVID-19 (caused by Coronavirus) cases/deaths/recovered directly at your terminal.

covid.sh

#!/usr/bin/env bash
# covid.sh
##########

readonly API_URL='https://coronavirus-19-api.herokuapp.com'
readonly USAGE="Usage: $0 [country1 [country2] [countryN]] "

declare -A data

json2array() {
  local jsonData="$1"

  # check if it's a valid JSON
  jq empty <<<"$jsonData" 2>/dev/null || return 1

  while IFS== read -r key value; do
    data[$key]="$value"
  done < <(jq -r '. | to_entries | .[] | .key + "=" + (.value|tostring)' <<<"$jsonData")
}

main() {
  local json
  
  # global info first
  json="$(curl --silent "${API_URL}/all")"

  if ! json2array "$json"; then
    echo "ERROR: failed to get data from $API_URL" >&2
    echo "$USAGE" >&2
    exit 1
  fi

  echo -n "
=====================================
OFFICIALLY REPORTED CASES OF COVID-19
=====================================

---> global info

Cases.........................: ${data[cases]}
Deaths........................: ${data[deaths]}
Recovered patients............: ${data[recovered]}
"

  for country in "$@"; do
    json="$(curl --silent "${API_URL}/countries/${country}")"

    if ! json2array "$json"; then
      echo "ERROR: failed to get data from $API_URL" >&2
      echo "$USAGE" >&2
      exit 1
    fi

    echo -n "
---> info for ${data[country]}

Cases.........................: ${data[cases]}
Cases reported today..........: ${data[todayCases]}
Deaths........................: ${data[deaths]}
Deaths reported today.........: ${data[todayDeaths]}
Recovered patients............: ${data[recovered]}
Patients in critical situation: ${data[critical]}
"
  done
}

main "$@"