Awk - replace one character only in a certain column












1














I have a file like this:



2018.01.02;1.5;comment 1

2018.01.04;2.75;comment 2

2018.01.07;5.25;comment 4

2018.01.09;1.25;comment 7


I want to replace all dots . in the second column with a comma , as I would with sed 's/./,/g' file how can I use sed or preferably awk to only apply this for the second column, so my output would look like this:



2018.01.02;1,5;comment 1

2018.01.04;2,75;comment 2

2018.01.07;5,25;comment 4

2018.01.09;1,25;comment 7





text-processing awk sed







share|improve this question



























    1














    I have a file like this:



    2018.01.02;1.5;comment 1
    
2018.01.04;2.75;comment 2
    
2018.01.07;5.25;comment 4
    
2018.01.09;1.25;comment 7


    I want to replace all dots . in the second column with a comma , as I would with sed 's/./,/g' file how can I use sed or preferably awk to only apply this for the second column, so my output would look like this:



    2018.01.02;1,5;comment 1
    
2018.01.04;2,75;comment 2
    
2018.01.07;5,25;comment 4
    
2018.01.09;1,25;comment 7





    text-processing awk sed







    share|improve this question

























      1












      1








      1







      I have a file like this:



      2018.01.02;1.5;comment 1
      
2018.01.04;2.75;comment 2
      
2018.01.07;5.25;comment 4
      
2018.01.09;1.25;comment 7


      I want to replace all dots . in the second column with a comma , as I would with sed 's/./,/g' file how can I use sed or preferably awk to only apply this for the second column, so my output would look like this:



      2018.01.02;1,5;comment 1
      
2018.01.04;2,75;comment 2
      
2018.01.07;5,25;comment 4
      
2018.01.09;1,25;comment 7





      text-processing awk sed







      share|improve this question













      I have a file like this:



      2018.01.02;1.5;comment 1
      
2018.01.04;2.75;comment 2
      
2018.01.07;5.25;comment 4
      
2018.01.09;1.25;comment 7


      I want to replace all dots . in the second column with a comma , as I would with sed 's/./,/g' file how can I use sed or preferably awk to only apply this for the second column, so my output would look like this:



      2018.01.02;1,5;comment 1
      
2018.01.04;2,75;comment 2
      
2018.01.07;5,25;comment 4
      
2018.01.09;1,25;comment 7





      text-processing awk sed




      text-processing awk sed






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 46 mins ago









      nath

      887425




      887425






















          2 Answers
          2






          active

          oldest

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          4














          $ awk 'BEGIN{FS=OFS=";"} {gsub(/./, ",", $2)} 1' ip.txt
          
2018.01.02;1,5;comment 1
          
2018.01.04;2,75;comment 2
          
2018.01.07;5,25;comment 4
          
2018.01.09;1,25;comment 7




          • BEGIN{} this block of code will be executed before processing any input line


          • FS=OFS=";" set input and output field separator as ;


          • gsub(/./, ",", $2) for each input line, replace all the . in 2nd field with ,


          • 1 is an awk idiom to print contents of $0 (which contains the input record)






          share|improve this answer



















          • 1




            awesome, much THX!
            – nath
            41 mins ago



















          1














          sed 's/./,/3' file


          replace the third occurence of the dot






          share|improve this answer























          • Another Useles Use of cat... Why not just sed 's/./,/3' file? (Also, the comma does not need to be escaped.)
            – twalberg
            18 mins ago










          • I took into account the observations
            – Emilio Galarraga
            6 mins ago











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          2 Answers
          2






          active

          oldest

          votes








          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          4














          $ awk 'BEGIN{FS=OFS=";"} {gsub(/./, ",", $2)} 1' ip.txt
          
2018.01.02;1,5;comment 1
          
2018.01.04;2,75;comment 2
          
2018.01.07;5,25;comment 4
          
2018.01.09;1,25;comment 7




          • BEGIN{} this block of code will be executed before processing any input line


          • FS=OFS=";" set input and output field separator as ;


          • gsub(/./, ",", $2) for each input line, replace all the . in 2nd field with ,


          • 1 is an awk idiom to print contents of $0 (which contains the input record)






          share|improve this answer



















          • 1




            awesome, much THX!
            – nath
            41 mins ago
















          4














          $ awk 'BEGIN{FS=OFS=";"} {gsub(/./, ",", $2)} 1' ip.txt
          
2018.01.02;1,5;comment 1
          
2018.01.04;2,75;comment 2
          
2018.01.07;5,25;comment 4
          
2018.01.09;1,25;comment 7




          • BEGIN{} this block of code will be executed before processing any input line


          • FS=OFS=";" set input and output field separator as ;


          • gsub(/./, ",", $2) for each input line, replace all the . in 2nd field with ,


          • 1 is an awk idiom to print contents of $0 (which contains the input record)






          share|improve this answer



















          • 1




            awesome, much THX!
            – nath
            41 mins ago














          4












          4








          4






          $ awk 'BEGIN{FS=OFS=";"} {gsub(/./, ",", $2)} 1' ip.txt
          
2018.01.02;1,5;comment 1
          
2018.01.04;2,75;comment 2
          
2018.01.07;5,25;comment 4
          
2018.01.09;1,25;comment 7




          • BEGIN{} this block of code will be executed before processing any input line


          • FS=OFS=";" set input and output field separator as ;


          • gsub(/./, ",", $2) for each input line, replace all the . in 2nd field with ,


          • 1 is an awk idiom to print contents of $0 (which contains the input record)






          share|improve this answer














          $ awk 'BEGIN{FS=OFS=";"} {gsub(/./, ",", $2)} 1' ip.txt
          
2018.01.02;1,5;comment 1
          
2018.01.04;2,75;comment 2
          
2018.01.07;5,25;comment 4
          
2018.01.09;1,25;comment 7




          • BEGIN{} this block of code will be executed before processing any input line


          • FS=OFS=";" set input and output field separator as ;


          • gsub(/./, ",", $2) for each input line, replace all the . in 2nd field with ,


          • 1 is an awk idiom to print contents of $0 (which contains the input record)







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 40 mins ago

























          answered 43 mins ago









          Sundeep

          7,1561826




          7,1561826








          • 1




            awesome, much THX!
            – nath
            41 mins ago














          • 1




            awesome, much THX!
            – nath
            41 mins ago








          1




          1




          awesome, much THX!
          – nath
          41 mins ago




          awesome, much THX!
          – nath
          41 mins ago













          1














          sed 's/./,/3' file


          replace the third occurence of the dot






          share|improve this answer























          • Another Useles Use of cat... Why not just sed 's/./,/3' file? (Also, the comma does not need to be escaped.)
            – twalberg
            18 mins ago










          • I took into account the observations
            – Emilio Galarraga
            6 mins ago
















          1














          sed 's/./,/3' file


          replace the third occurence of the dot






          share|improve this answer























          • Another Useles Use of cat... Why not just sed 's/./,/3' file? (Also, the comma does not need to be escaped.)
            – twalberg
            18 mins ago










          • I took into account the observations
            – Emilio Galarraga
            6 mins ago














          1












          1








          1






          sed 's/./,/3' file


          replace the third occurence of the dot






          share|improve this answer














          sed 's/./,/3' file


          replace the third occurence of the dot







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 9 mins ago

























          answered 41 mins ago









          Emilio Galarraga

          39929




          39929












          • Another Useles Use of cat... Why not just sed 's/./,/3' file? (Also, the comma does not need to be escaped.)
            – twalberg
            18 mins ago










          • I took into account the observations
            – Emilio Galarraga
            6 mins ago


















          • Another Useles Use of cat... Why not just sed 's/./,/3' file? (Also, the comma does not need to be escaped.)
            – twalberg
            18 mins ago










          • I took into account the observations
            – Emilio Galarraga
            6 mins ago
















          Another Useles Use of cat... Why not just sed 's/./,/3' file? (Also, the comma does not need to be escaped.)
          – twalberg
          18 mins ago




          Another Useles Use of cat... Why not just sed 's/./,/3' file? (Also, the comma does not need to be escaped.)
          – twalberg
          18 mins ago












          I took into account the observations
          – Emilio Galarraga
          6 mins ago




          I took into account the observations
          – Emilio Galarraga
          6 mins ago


















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