subset a large file based on elements in another file

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I would like to subset a large file based on elements in another file in bash. Here is an example data for the first file:



Col1,Col2,Col3

A,10,50

B,10,05

C,20,30

B,20,03

A,30,100

C,30,111

D,40,120



The second file is:

A

B

C



I would to save subset of file1 with first column takes value "A" to A.txt; and "B" to B.txt, and so on.



Before I am using



awk '$1=="A"' file1.txt > A.txt



but now I have to deal with 100+ different names in the second file, looking for a better way to get the job done. Thanks!!!






text-processing awk command-line






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    up vote
    0
    down vote

    favorite












    I would like to subset a large file based on elements in another file in bash. Here is an example data for the first file:



    Col1,Col2,Col3

    A,10,50

    B,10,05

    C,20,30

    B,20,03

    A,30,100

    C,30,111

    D,40,120



    The second file is:

    A

    B

    C



    I would to save subset of file1 with first column takes value "A" to A.txt; and "B" to B.txt, and so on.



    Before I am using



    awk '$1=="A"' file1.txt > A.txt



    but now I have to deal with 100+ different names in the second file, looking for a better way to get the job done. Thanks!!!






    text-processing awk command-line






    share







    New contributor




    mathcz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.





















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      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I would like to subset a large file based on elements in another file in bash. Here is an example data for the first file:



      Col1,Col2,Col3

      A,10,50

      B,10,05

      C,20,30

      B,20,03

      A,30,100

      C,30,111

      D,40,120



      The second file is:

      A

      B

      C



      I would to save subset of file1 with first column takes value "A" to A.txt; and "B" to B.txt, and so on.



      Before I am using



      awk '$1=="A"' file1.txt > A.txt



      but now I have to deal with 100+ different names in the second file, looking for a better way to get the job done. Thanks!!!






      text-processing awk command-line






      share







      New contributor




      mathcz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      I would like to subset a large file based on elements in another file in bash. Here is an example data for the first file:



      Col1,Col2,Col3

      A,10,50

      B,10,05

      C,20,30

      B,20,03

      A,30,100

      C,30,111

      D,40,120



      The second file is:

      A

      B

      C



      I would to save subset of file1 with first column takes value "A" to A.txt; and "B" to B.txt, and so on.



      Before I am using



      awk '$1=="A"' file1.txt > A.txt



      but now I have to deal with 100+ different names in the second file, looking for a better way to get the job done. Thanks!!!






      text-processing awk command-line




      text-processing awk command-line





      share







      New contributor




      mathcz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.










      share







      New contributor




      mathcz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.








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      mathcz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      asked 3 mins ago









      mathcz

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      mathcz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      mathcz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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