stockprice

#!/bin/sh

# stockprice: fetch live stock prices from yahoo finance

if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
        echo "usage: stockprice [symbol...]"
        exit 0
fi

while [ $# -gt 0 ]; do
        symbol="$(printf '%s' "$1" | tr '[:lower:]' '[:upper:]')"
        shift

        curl --silent --location "https://query2.finance.yahoo.com/v8/finance/chart/$symbol" \
         | jq --raw-output '.chart | .result[0].meta as $meta | [ $meta.regularMarketPrice, $meta.previousClose, $meta.currency, .error.description ] | @tsv' \
         | LC_ALL=C.UTF-8 awk -F '\t' -v "symbol=$symbol" '
           BEGIN {
               time = strftime("%Y-%m-%dT%H:%M:%S%z")
           }
           $NF {
               printf("%s|||||%s|%s\n", symbol, time, $NF)
           }
           !$NF {
               change = $1 - $2
               sign   = change > 0 ? "+" : ""
               perc   = change / $2 * 100
               printf("%s|%.2f|%s%.2f|%s%.2f%%|%s|%s\n", symbol, $1, sign, change, sign, perc, $3, time)
           }' \
         &

done | sort | column --table --table-right 2,3,4 --separator '|'

wait