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currency (278B)

      1 #!/bin/sh
      2 
      3 [ -z $1 ] && echo "usage: $(basename $0) <amount> <input currency> in <output currency>" && exit
      4 
      5 from="$2"
      6 to="$4"
      7 
      8 mult=$(curl -qs "https://min-api.cryptocompare.com/data/price?fsym=$from&tsyms=$to" | awk -F"[\"}{:]" '{print $5}')
      9 
     10 echo "scale=15; $1 * $mult" | bc