Find the largest positive number in my given data?












0















Can someone show me a way to find the largest positive number using awk,sed or some sort of unix shell program. Im using Linux RHEL with KSH. The input may have 8 columns worth of data with N/A as one of the possible values.



SAMPLE INPUT

1252.2 1251.8 N/A N/A
-31.9 -33.2 N/A N/A
-1172.4 -1174.4 N/A N/A
-6.5 -6.4 N/A N/A
-.3 -.3 N/A N/A
1351.8 1351.8 N/A N/A
38.3 38.0 N/A N/A
-21.6 -21.9 N/A N/A
-4.7 -4.5 N/A N/A
-5.0 -2.9 N/A N/A
3.1 3.3 N/A N/A
-20.1 -20.3 N/A N/A
-199.1 -199.3 N/A N/A
346.5 346.7 N/A N/A
-.8 -.4 N/A N/A
14.8 14.7 N/A N/A
8.4 8.4 N/A N/A
-18.2 -18.2 N/A N/A
-43.7 -43.6 N/A N/A


Desired output



Largest number is 1351.8









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    0















    Can someone show me a way to find the largest positive number using awk,sed or some sort of unix shell program. Im using Linux RHEL with KSH. The input may have 8 columns worth of data with N/A as one of the possible values.



    SAMPLE INPUT

    1252.2 1251.8 N/A N/A
    -31.9 -33.2 N/A N/A
    -1172.4 -1174.4 N/A N/A
    -6.5 -6.4 N/A N/A
    -.3 -.3 N/A N/A
    1351.8 1351.8 N/A N/A
    38.3 38.0 N/A N/A
    -21.6 -21.9 N/A N/A
    -4.7 -4.5 N/A N/A
    -5.0 -2.9 N/A N/A
    3.1 3.3 N/A N/A
    -20.1 -20.3 N/A N/A
    -199.1 -199.3 N/A N/A
    346.5 346.7 N/A N/A
    -.8 -.4 N/A N/A
    14.8 14.7 N/A N/A
    8.4 8.4 N/A N/A
    -18.2 -18.2 N/A N/A
    -43.7 -43.6 N/A N/A


    Desired output



    Largest number is 1351.8









    share|improve this question

























      0












      0








      0








      Can someone show me a way to find the largest positive number using awk,sed or some sort of unix shell program. Im using Linux RHEL with KSH. The input may have 8 columns worth of data with N/A as one of the possible values.



      SAMPLE INPUT

      1252.2 1251.8 N/A N/A
      -31.9 -33.2 N/A N/A
      -1172.4 -1174.4 N/A N/A
      -6.5 -6.4 N/A N/A
      -.3 -.3 N/A N/A
      1351.8 1351.8 N/A N/A
      38.3 38.0 N/A N/A
      -21.6 -21.9 N/A N/A
      -4.7 -4.5 N/A N/A
      -5.0 -2.9 N/A N/A
      3.1 3.3 N/A N/A
      -20.1 -20.3 N/A N/A
      -199.1 -199.3 N/A N/A
      346.5 346.7 N/A N/A
      -.8 -.4 N/A N/A
      14.8 14.7 N/A N/A
      8.4 8.4 N/A N/A
      -18.2 -18.2 N/A N/A
      -43.7 -43.6 N/A N/A


      Desired output



      Largest number is 1351.8









      share|improve this question














      Can someone show me a way to find the largest positive number using awk,sed or some sort of unix shell program. Im using Linux RHEL with KSH. The input may have 8 columns worth of data with N/A as one of the possible values.



      SAMPLE INPUT

      1252.2 1251.8 N/A N/A
      -31.9 -33.2 N/A N/A
      -1172.4 -1174.4 N/A N/A
      -6.5 -6.4 N/A N/A
      -.3 -.3 N/A N/A
      1351.8 1351.8 N/A N/A
      38.3 38.0 N/A N/A
      -21.6 -21.9 N/A N/A
      -4.7 -4.5 N/A N/A
      -5.0 -2.9 N/A N/A
      3.1 3.3 N/A N/A
      -20.1 -20.3 N/A N/A
      -199.1 -199.3 N/A N/A
      346.5 346.7 N/A N/A
      -.8 -.4 N/A N/A
      14.8 14.7 N/A N/A
      8.4 8.4 N/A N/A
      -18.2 -18.2 N/A N/A
      -43.7 -43.6 N/A N/A


      Desired output



      Largest number is 1351.8






      shell-script awk sed ksh






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      asked 13 mins ago









      ayrton_sennaayrton_senna

      5122419




      5122419






















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          One way can be:



          perl -lane '$_>$m and $m=$_ for @F}{print $m' sample.txt 




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            1 Answer
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            1 Answer
            1






            active

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            active

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            active

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            0














            One way can be:



            perl -lane '$_>$m and $m=$_ for @F}{print $m' sample.txt 




            share




























              0














              One way can be:



              perl -lane '$_>$m and $m=$_ for @F}{print $m' sample.txt 




              share


























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                0








                0







                One way can be:



                perl -lane '$_>$m and $m=$_ for @F}{print $m' sample.txt 




                share













                One way can be:



                perl -lane '$_>$m and $m=$_ for @F}{print $m' sample.txt 





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                answered 5 mins ago









                Rakesh SharmaRakesh Sharma

                314113




                314113






























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