Skipping the first line of file












1















How to skip the first line to print columns in some format and after some arithmetic operation below? Is it possible with next?



Input



#filename
4e+06 5e+06 6e+06
5e+06 5e+06 6e+06


Code:



BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FR>1 {print t($1-1000),t($2)}









share|improve this question




















  • 1





    Simply put a getline in the BEGIN block and it will skip the first line.

    – mosvy
    Feb 6 at 5:02











  • Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.

    – Lukáš Altman
    Feb 6 at 5:07











  • You will see that a lot of people write NR != 1 {...} or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, write FNR>1 && (...your condition...) { ... }

    – mosvy
    Feb 6 at 5:07











  • BEGIN { getline; CONVFMT="%0.17f" }

    – mosvy
    Feb 6 at 5:08











  • I got an empty file.

    – Lukáš Altman
    Feb 6 at 5:13


















1















How to skip the first line to print columns in some format and after some arithmetic operation below? Is it possible with next?



Input



#filename
4e+06 5e+06 6e+06
5e+06 5e+06 6e+06


Code:



BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FR>1 {print t($1-1000),t($2)}









share|improve this question




















  • 1





    Simply put a getline in the BEGIN block and it will skip the first line.

    – mosvy
    Feb 6 at 5:02











  • Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.

    – Lukáš Altman
    Feb 6 at 5:07











  • You will see that a lot of people write NR != 1 {...} or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, write FNR>1 && (...your condition...) { ... }

    – mosvy
    Feb 6 at 5:07











  • BEGIN { getline; CONVFMT="%0.17f" }

    – mosvy
    Feb 6 at 5:08











  • I got an empty file.

    – Lukáš Altman
    Feb 6 at 5:13
















1












1








1








How to skip the first line to print columns in some format and after some arithmetic operation below? Is it possible with next?



Input



#filename
4e+06 5e+06 6e+06
5e+06 5e+06 6e+06


Code:



BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FR>1 {print t($1-1000),t($2)}









share|improve this question
















How to skip the first line to print columns in some format and after some arithmetic operation below? Is it possible with next?



Input



#filename
4e+06 5e+06 6e+06
5e+06 5e+06 6e+06


Code:



BEGIN { CONVFMT="%0.17f" }
function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}
FR>1 {print t($1-1000),t($2)}






awk






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Feb 6 at 6:07







Lukáš Altman

















asked Feb 6 at 4:55









Lukáš AltmanLukáš Altman

345




345








  • 1





    Simply put a getline in the BEGIN block and it will skip the first line.

    – mosvy
    Feb 6 at 5:02











  • Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.

    – Lukáš Altman
    Feb 6 at 5:07











  • You will see that a lot of people write NR != 1 {...} or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, write FNR>1 && (...your condition...) { ... }

    – mosvy
    Feb 6 at 5:07











  • BEGIN { getline; CONVFMT="%0.17f" }

    – mosvy
    Feb 6 at 5:08











  • I got an empty file.

    – Lukáš Altman
    Feb 6 at 5:13
















  • 1





    Simply put a getline in the BEGIN block and it will skip the first line.

    – mosvy
    Feb 6 at 5:02











  • Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.

    – Lukáš Altman
    Feb 6 at 5:07











  • You will see that a lot of people write NR != 1 {...} or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, write FNR>1 && (...your condition...) { ... }

    – mosvy
    Feb 6 at 5:07











  • BEGIN { getline; CONVFMT="%0.17f" }

    – mosvy
    Feb 6 at 5:08











  • I got an empty file.

    – Lukáš Altman
    Feb 6 at 5:13










1




1





Simply put a getline in the BEGIN block and it will skip the first line.

– mosvy
Feb 6 at 5:02





Simply put a getline in the BEGIN block and it will skip the first line.

– mosvy
Feb 6 at 5:02













Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.

– Lukáš Altman
Feb 6 at 5:07





Where excatly to place it? What I tried is syntax error or it doesn't print the first line and don't count then.

– Lukáš Altman
Feb 6 at 5:07













You will see that a lot of people write NR != 1 {...} or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, write FNR>1 && (...your condition...) { ... }

– mosvy
Feb 6 at 5:07





You will see that a lot of people write NR != 1 {...} or such, and you'll probably receive answers like that; don't do it -- it's dumb ;-). If you want to skip the first line of each file, write FNR>1 && (...your condition...) { ... }

– mosvy
Feb 6 at 5:07













BEGIN { getline; CONVFMT="%0.17f" }

– mosvy
Feb 6 at 5:08





BEGIN { getline; CONVFMT="%0.17f" }

– mosvy
Feb 6 at 5:08













I got an empty file.

– Lukáš Altman
Feb 6 at 5:13







I got an empty file.

– Lukáš Altman
Feb 6 at 5:13












1 Answer
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oldest

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0














You just made a typo in the last line of your awk script: It should read FNR instead of FR in the address:



BEGIN { CONVFMT="%0.17f" }

function t(n, s) {
s=index(n,".")
return (s ? substr(n,1,s+2) : n)
}

FNR>1 {print t($1-1000),t($2)}


This works here as expected.



With the typo, the address FR>1 does not match any of your data lines: FR is a constant and the condition FR>1 always false. That's why you do not get any output.






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    1 Answer
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    1 Answer
    1






    active

    oldest

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    active

    oldest

    votes






    active

    oldest

    votes









    0














    You just made a typo in the last line of your awk script: It should read FNR instead of FR in the address:



    BEGIN { CONVFMT="%0.17f" }

    function t(n, s) {
    s=index(n,".")
    return (s ? substr(n,1,s+2) : n)
    }

    FNR>1 {print t($1-1000),t($2)}


    This works here as expected.



    With the typo, the address FR>1 does not match any of your data lines: FR is a constant and the condition FR>1 always false. That's why you do not get any output.






    share|improve this answer






























      0














      You just made a typo in the last line of your awk script: It should read FNR instead of FR in the address:



      BEGIN { CONVFMT="%0.17f" }

      function t(n, s) {
      s=index(n,".")
      return (s ? substr(n,1,s+2) : n)
      }

      FNR>1 {print t($1-1000),t($2)}


      This works here as expected.



      With the typo, the address FR>1 does not match any of your data lines: FR is a constant and the condition FR>1 always false. That's why you do not get any output.






      share|improve this answer




























        0












        0








        0







        You just made a typo in the last line of your awk script: It should read FNR instead of FR in the address:



        BEGIN { CONVFMT="%0.17f" }

        function t(n, s) {
        s=index(n,".")
        return (s ? substr(n,1,s+2) : n)
        }

        FNR>1 {print t($1-1000),t($2)}


        This works here as expected.



        With the typo, the address FR>1 does not match any of your data lines: FR is a constant and the condition FR>1 always false. That's why you do not get any output.






        share|improve this answer















        You just made a typo in the last line of your awk script: It should read FNR instead of FR in the address:



        BEGIN { CONVFMT="%0.17f" }

        function t(n, s) {
        s=index(n,".")
        return (s ? substr(n,1,s+2) : n)
        }

        FNR>1 {print t($1-1000),t($2)}


        This works here as expected.



        With the typo, the address FR>1 does not match any of your data lines: FR is a constant and the condition FR>1 always false. That's why you do not get any output.







        share|improve this answer














        share|improve this answer



        share|improve this answer








        edited Feb 6 at 21:49

























        answered Feb 6 at 21:35









        JürgenJürgen

        192110




        192110






























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