Trim trailing zeroes off a number extracted by jq





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6















The following command achieve my goal by grepping BTC price from specific exchange.



curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price'


the output will be for the moment 7222.25000000 but i would like to get it 7222.25






numeric-data jq







share|improve this question




















  • 2





    Note that generally, you should only use the curl tag if curl is an essential part of the problem. If you can download the file to save it on disk and run jq -r .price <myfile and get the same problem, curl isn't a necessary part of the problem.

    – Charles Duffy
    May 12 at 18:28




















6















The following command achieve my goal by grepping BTC price from specific exchange.



curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price'


the output will be for the moment 7222.25000000 but i would like to get it 7222.25






numeric-data jq







share|improve this question




















  • 2





    Note that generally, you should only use the curl tag if curl is an essential part of the problem. If you can download the file to save it on disk and run jq -r .price <myfile and get the same problem, curl isn't a necessary part of the problem.

    – Charles Duffy
    May 12 at 18:28
















6












6








6








The following command achieve my goal by grepping BTC price from specific exchange.



curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price'


the output will be for the moment 7222.25000000 but i would like to get it 7222.25






numeric-data jq







share|improve this question
















The following command achieve my goal by grepping BTC price from specific exchange.



curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price'


the output will be for the moment 7222.25000000 but i would like to get it 7222.25






numeric-data jq




numeric-data jq






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited May 13 at 6:25









Michael Homer

52.6k9146182




52.6k9146182










asked May 12 at 6:31









αԋɱҽԃ αмєяιcαηαԋɱҽԃ αмєяιcαη

5152726




5152726








  • 2





    Note that generally, you should only use the curl tag if curl is an essential part of the problem. If you can download the file to save it on disk and run jq -r .price <myfile and get the same problem, curl isn't a necessary part of the problem.

    – Charles Duffy
    May 12 at 18:28
















  • 2





    Note that generally, you should only use the curl tag if curl is an essential part of the problem. If you can download the file to save it on disk and run jq -r .price <myfile and get the same problem, curl isn't a necessary part of the problem.

    – Charles Duffy
    May 12 at 18:28










2




2





Note that generally, you should only use the curl tag if curl is an essential part of the problem. If you can download the file to save it on disk and run jq -r .price <myfile and get the same problem, curl isn't a necessary part of the problem.

– Charles Duffy
May 12 at 18:28







Note that generally, you should only use the curl tag if curl is an essential part of the problem. If you can download the file to save it on disk and run jq -r .price <myfile and get the same problem, curl isn't a necessary part of the problem.

– Charles Duffy
May 12 at 18:28












3 Answers
3






active

oldest

votes


















13














Pass the price through tonumber:



curl -sS 'https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT' |

jq -r '.price | tonumber'


This would convert the price from a string to a number, removing the trailing zeros. See the manual for jq.






share|improve this answer
























  • Note that it seems to be doing the equivalent of printf %16g so you might lose some precision and numbers above 10 quadrillion would be represented with 1e16 notation and 0.00009 as 9e-05 for instance

    – Stéphane Chazelas
    May 13 at 6:59



















4














If you don't mind using a Bash builtin, printf might be the way to go:



curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price' | xargs printf '%.2f'


This way you will keep the two trailing digits and get a rounding done as well.






share|improve this answer



















  • 1





    xargs isn’t going to run the Bash builtin.

    – Michael Homer
    May 13 at 6:23











  • @MichaelHomer you are right, xargs will run the printf binary and not the builtin.

    – Edward
    May 13 at 7:04



















2














Awk is an option also



curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price'  | awk '{printf "%.2fn", $1}'





share|improve this answer
























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    3 Answers
    3






    active

    oldest

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    3 Answers
    3






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    13














    Pass the price through tonumber:



    curl -sS 'https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT' |
    
jq -r '.price | tonumber'


    This would convert the price from a string to a number, removing the trailing zeros. See the manual for jq.






    share|improve this answer
























    • Note that it seems to be doing the equivalent of printf %16g so you might lose some precision and numbers above 10 quadrillion would be represented with 1e16 notation and 0.00009 as 9e-05 for instance

      – Stéphane Chazelas
      May 13 at 6:59
















    13














    Pass the price through tonumber:



    curl -sS 'https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT' |
    
jq -r '.price | tonumber'


    This would convert the price from a string to a number, removing the trailing zeros. See the manual for jq.






    share|improve this answer
























    • Note that it seems to be doing the equivalent of printf %16g so you might lose some precision and numbers above 10 quadrillion would be represented with 1e16 notation and 0.00009 as 9e-05 for instance

      – Stéphane Chazelas
      May 13 at 6:59














    13












    13








    13







    Pass the price through tonumber:



    curl -sS 'https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT' |
    
jq -r '.price | tonumber'


    This would convert the price from a string to a number, removing the trailing zeros. See the manual for jq.






    share|improve this answer













    Pass the price through tonumber:



    curl -sS 'https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT' |
    
jq -r '.price | tonumber'


    This would convert the price from a string to a number, removing the trailing zeros. See the manual for jq.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered May 12 at 6:45









    Kusalananda♦Kusalananda

    148k18279468




    148k18279468













    • Note that it seems to be doing the equivalent of printf %16g so you might lose some precision and numbers above 10 quadrillion would be represented with 1e16 notation and 0.00009 as 9e-05 for instance

      – Stéphane Chazelas
      May 13 at 6:59



















    • Note that it seems to be doing the equivalent of printf %16g so you might lose some precision and numbers above 10 quadrillion would be represented with 1e16 notation and 0.00009 as 9e-05 for instance

      – Stéphane Chazelas
      May 13 at 6:59

















    Note that it seems to be doing the equivalent of printf %16g so you might lose some precision and numbers above 10 quadrillion would be represented with 1e16 notation and 0.00009 as 9e-05 for instance

    – Stéphane Chazelas
    May 13 at 6:59





    Note that it seems to be doing the equivalent of printf %16g so you might lose some precision and numbers above 10 quadrillion would be represented with 1e16 notation and 0.00009 as 9e-05 for instance

    – Stéphane Chazelas
    May 13 at 6:59













    4














    If you don't mind using a Bash builtin, printf might be the way to go:



    curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price' | xargs printf '%.2f'


    This way you will keep the two trailing digits and get a rounding done as well.






    share|improve this answer



















    • 1





      xargs isn’t going to run the Bash builtin.

      – Michael Homer
      May 13 at 6:23











    • @MichaelHomer you are right, xargs will run the printf binary and not the builtin.

      – Edward
      May 13 at 7:04
















    4














    If you don't mind using a Bash builtin, printf might be the way to go:



    curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price' | xargs printf '%.2f'


    This way you will keep the two trailing digits and get a rounding done as well.






    share|improve this answer



















    • 1





      xargs isn’t going to run the Bash builtin.

      – Michael Homer
      May 13 at 6:23











    • @MichaelHomer you are right, xargs will run the printf binary and not the builtin.

      – Edward
      May 13 at 7:04














    4












    4








    4







    If you don't mind using a Bash builtin, printf might be the way to go:



    curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price' | xargs printf '%.2f'


    This way you will keep the two trailing digits and get a rounding done as well.






    share|improve this answer













    If you don't mind using a Bash builtin, printf might be the way to go:



    curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price' | xargs printf '%.2f'


    This way you will keep the two trailing digits and get a rounding done as well.







    share|improve this answer












    share|improve this answer



    share|improve this answer










    answered May 12 at 6:48









    EdwardEdward

    43338




    43338








    • 1





      xargs isn’t going to run the Bash builtin.

      – Michael Homer
      May 13 at 6:23











    • @MichaelHomer you are right, xargs will run the printf binary and not the builtin.

      – Edward
      May 13 at 7:04














    • 1





      xargs isn’t going to run the Bash builtin.

      – Michael Homer
      May 13 at 6:23











    • @MichaelHomer you are right, xargs will run the printf binary and not the builtin.

      – Edward
      May 13 at 7:04








    1




    1





    xargs isn’t going to run the Bash builtin.

    – Michael Homer
    May 13 at 6:23





    xargs isn’t going to run the Bash builtin.

    – Michael Homer
    May 13 at 6:23













    @MichaelHomer you are right, xargs will run the printf binary and not the builtin.

    – Edward
    May 13 at 7:04





    @MichaelHomer you are right, xargs will run the printf binary and not the builtin.

    – Edward
    May 13 at 7:04











    2














    Awk is an option also



    curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price'  | awk '{printf "%.2fn", $1}'





    share|improve this answer




























      2














      Awk is an option also



      curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price'  | awk '{printf "%.2fn", $1}'





      share|improve this answer


























        2












        2








        2







        Awk is an option also



        curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price'  | awk '{printf "%.2fn", $1}'





        share|improve this answer













        Awk is an option also



        curl -sS https://api.binance.com/api/v1/ticker/price?symbol=BTCUSDT | jq -r '.price'  | awk '{printf "%.2fn", $1}'






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered May 12 at 6:49









        al76al76

        1954




        1954






























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