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

          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



















          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











          Your Answer








          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "106"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: false,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: null,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f492500%2fawk-replace-one-character-only-in-a-certain-column%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          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


















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Unix & Linux Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid …



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.





          Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


          Please pay close attention to the following guidance:


          • Please be sure to answer the question. Provide details and share your research!

          But avoid …



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f492500%2fawk-replace-one-character-only-in-a-certain-column%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          -

          Popular posts from this blog

          Understanding the information contained in the Deep Space Network XML data?

          Image
          up vote 1 down vote favorite NASA's Deep Space Network activity can be viewed conveniently at https://eyes.nasa.gov/dsn/dsn.html but if you would like data in a more raw XML form, it can be accessed as described in this answer Below is a small Python script that reads the XML into a list of dictionaries, and saves it to disk as a JSON. The dictionaries are organized at the higher level by dish, then by spacecraft per dish. Question: What are the most-likely meanings of all the data field contained in the Deep Space Network XML data? This is the example url from the other answer, used in the script below: https://eyes.nasa.gov/dsn/data/1365107113.xml def dictify(r,root=True): # https://stackoverflow.com/questions/2148119/how-to-convert-an-xml-string-to-a-dictionary-in-python/30923963#30923963 if root: ret
          Read more

          Ross-on-Wye

          Image
          Ross-on-Wye Welsh: Rhosan ar Wy Town centre, looking north from Market House Ross-on-Wye Ross-on-Wye shown within Herefordshire Population 10,700 (2011) [1] OS grid reference SO597241 Unitary authority Herefordshire Ceremonial county Herefordshire Region West Midlands Country England Sovereign state United Kingdom Post town ROSS-ON-WYE Postcode district HR9 Dialling code 01989 Police West Mercia Fire Hereford and Worcester Ambulance West Midlands EU Parliament West Midlands UK Parliament Hereford and South Herefordshire List of places UK England Herefordshire 51°54′50″N 2°35′13″W  /  51.914°N 2.587°W  / 51.914; -2.587 Coordinates: 51°54′50″N 2°35′13″W  /  51.914°N 2.587°W  / 51.914; -2.587 Ross-on-Wye (Welsh: Rhosan ar Wy [2] ) is a small market town with a population of 10,700 (according to the 2011 census), in south eastern Herefordshire, England, located on the River Wye, and on
          Read more

          Eastern Orthodox Church

          Image
          Not to be confused with Oriental Orthodoxy, Eastern Christianity, or Eastern Catholic Churches. "Eastern Orthodoxy", "Orthodox Church", "Orthodox Catholic Church", and "Orthodox Christian Church" redirect here. For other uses, see Orthodox (disambiguation). This article may be too long to read and navigate comfortably . The readable prose size is 132 kilobytes. Please consider splitting content into sub-articles, condensing it, or adding or removing subheadings. ( January 2018 ) Part of a series on the Eastern Orthodox Church Mosaic of Christ Pantocrator, Hagia Sophia Overview Structure Theology (History of theology) Liturgy Church history Holy Mysteries View of salvation View of Mary View of icons Background Crucifixion / Resurrection / Ascension of Jesus Christianity Christian Church Apostolic succession Four Marks of the Church Orthodoxy Organization Autocephaly Patriarchate
          Read more