Searching all downloaded files in a file list

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I've downloaded some files. I want to find out whether these file names are present in file.txt one by one. I've tried following command but not successful. I want to find out using xargs.

ls | xargs grep file.txt

How do I do that?




command-line xargs




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    up vote
    0
    down vote

    favorite












    I've downloaded some files. I want to find out whether these file names are present in file.txt one by one. I've tried following command but not successful. I want to find out using xargs.

    ls | xargs grep file.txt

    How do I do that?




    command-line xargs




    share|improve this question






















      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I've downloaded some files. I want to find out whether these file names are present in file.txt one by one. I've tried following command but not successful. I want to find out using xargs.

      ls | xargs grep file.txt

      How do I do that?




      command-line xargs




      share|improve this question












      I've downloaded some files. I want to find out whether these file names are present in file.txt one by one. I've tried following command but not successful. I want to find out using xargs.

      ls | xargs grep file.txt

      How do I do that?





      command-line xargs





      share|improve this question











      share|improve this question




      share|improve this question










      asked Oct 28 '17 at 11:05









      Nayab Basha Sayed

      1035




      1035




















          1 Answer
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          Though I'm not sure what exactly means your "one by one" but here is



          Short ls + grep approach:



          ls -1 | grep -wf - file.txt


          • -1 - ls option, lists one file per line


          • -f file - grep option, obtains patterns from file(or STDIN in case of passing - argument), one per line


          The same could be written as:



          grep -wf <(ls -1) file.txt





          share|improve this answer






















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            1 Answer
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            active

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            1 Answer
            1






            active

            oldest

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            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            0
            down vote



            accepted










            Though I'm not sure what exactly means your "one by one" but here is



            Short ls + grep approach:



            ls -1 | grep -wf - file.txt


            • -1 - ls option, lists one file per line


            • -f file - grep option, obtains patterns from file(or STDIN in case of passing - argument), one per line


            The same could be written as:



            grep -wf <(ls -1) file.txt





            share|improve this answer


























              up vote
              0
              down vote



              accepted










              Though I'm not sure what exactly means your "one by one" but here is



              Short ls + grep approach:



              ls -1 | grep -wf - file.txt


              • -1 - ls option, lists one file per line


              • -f file - grep option, obtains patterns from file(or STDIN in case of passing - argument), one per line


              The same could be written as:



              grep -wf <(ls -1) file.txt





              share|improve this answer
























                up vote
                0
                down vote



                accepted







                up vote
                0
                down vote



                accepted






                Though I'm not sure what exactly means your "one by one" but here is



                Short ls + grep approach:



                ls -1 | grep -wf - file.txt


                • -1 - ls option, lists one file per line


                • -f file - grep option, obtains patterns from file(or STDIN in case of passing - argument), one per line


                The same could be written as:



                grep -wf <(ls -1) file.txt





                share|improve this answer














                Though I'm not sure what exactly means your "one by one" but here is



                Short ls + grep approach:



                ls -1 | grep -wf - file.txt


                • -1 - ls option, lists one file per line


                • -f file - grep option, obtains patterns from file(or STDIN in case of passing - argument), one per line


                The same could be written as:



                grep -wf <(ls -1) file.txt






                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Oct 28 '17 at 11:23

























                answered Oct 28 '17 at 11:11









                RomanPerekhrest

                22.5k12145




                22.5k12145



























                     

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