Looping through all files, skipping some dynamically Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern) 2019 Community Moderator Election Results Why I closed the “Why is Kali so hard” questionLooping through files with spaces in the names?Bash script for looping through filesLooping through a file using a columnLooping through unix datesLooping through lines in several files (bash)Bash looping through two sets of fileslooping through JSON array in shell scriptNeed to iterate through subdirectories, concatenating files, with an iterative numberFlatpak - Safely Relocate Sandboxed Home DirectoryWhile loops not looping through all values

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Looping through all files, skipping some dynamically



Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 00:00UTC (8:00pm US/Eastern)
2019 Community Moderator Election Results
Why I closed the “Why is Kali so hard” questionLooping through files with spaces in the names?Bash script for looping through filesLooping through a file using a columnLooping through unix datesLooping through lines in several files (bash)Bash looping through two sets of fileslooping through JSON array in shell scriptNeed to iterate through subdirectories, concatenating files, with an iterative numberFlatpak - Safely Relocate Sandboxed Home DirectoryWhile loops not looping through all values



.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








0















rather new to unix. Trying to create a script to loop through all files and subdirectories given a directory and printing them. I would like to be able to skip certain directories dynamically though.



My idea was to create a for loop, for i in $(find ./ -printf '%fn')
as this will iterate through everything from the given directory, but I was curious if there was a way to skip over a directory if I came across one I didn't want to go down.
As in



if [ "$i" == something I don't want to go down ] 
then
skip this directory
fi


Wasn't sure if it was possible. Found ways to skip directories using prune function but this requires you to know the types you want to skip beforehand, at least that was my understanding. Thanks.










share|improve this question









New contributor




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    0















    rather new to unix. Trying to create a script to loop through all files and subdirectories given a directory and printing them. I would like to be able to skip certain directories dynamically though.



    My idea was to create a for loop, for i in $(find ./ -printf '%fn')
    as this will iterate through everything from the given directory, but I was curious if there was a way to skip over a directory if I came across one I didn't want to go down.
    As in



    if [ "$i" == something I don't want to go down ] 
    then
    skip this directory
    fi


    Wasn't sure if it was possible. Found ways to skip directories using prune function but this requires you to know the types you want to skip beforehand, at least that was my understanding. Thanks.










    share|improve this question









    New contributor




    m.smith7878 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.






















      0












      0








      0








      rather new to unix. Trying to create a script to loop through all files and subdirectories given a directory and printing them. I would like to be able to skip certain directories dynamically though.



      My idea was to create a for loop, for i in $(find ./ -printf '%fn')
      as this will iterate through everything from the given directory, but I was curious if there was a way to skip over a directory if I came across one I didn't want to go down.
      As in



      if [ "$i" == something I don't want to go down ] 
      then
      skip this directory
      fi


      Wasn't sure if it was possible. Found ways to skip directories using prune function but this requires you to know the types you want to skip beforehand, at least that was my understanding. Thanks.










      share|improve this question









      New contributor




      m.smith7878 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.












      rather new to unix. Trying to create a script to loop through all files and subdirectories given a directory and printing them. I would like to be able to skip certain directories dynamically though.



      My idea was to create a for loop, for i in $(find ./ -printf '%fn')
      as this will iterate through everything from the given directory, but I was curious if there was a way to skip over a directory if I came across one I didn't want to go down.
      As in



      if [ "$i" == something I don't want to go down ] 
      then
      skip this directory
      fi


      Wasn't sure if it was possible. Found ways to skip directories using prune function but this requires you to know the types you want to skip beforehand, at least that was my understanding. Thanks.







      linux bash shell scripting find






      share|improve this question









      New contributor




      m.smith7878 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question









      New contributor




      m.smith7878 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question








      edited Apr 15 at 2:41









      mosvy

      10.4k11238




      10.4k11238






      New contributor




      m.smith7878 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      asked Apr 15 at 1:00









      m.smith7878m.smith7878

      1




      1




      New contributor




      m.smith7878 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      New contributor





      m.smith7878 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      m.smith7878 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.




















          1 Answer
          1






          active

          oldest

          votes


















          1














          Yes, -exec is a predicate just like -name, and find will consider the exit status of the command and treat it as false if it's non-zero.



          But notice that a) this only applies to the -exec ... ; form, not to the -exec .. + form (which is always true) and b) forking a separate process for each file or directory is slow.



          For example this will skip all directories that contain a file named foo.txt:



          find . -type d -exec test -f /foo.txt ; -prune -or -print

          $ mkdir -p a/1,2,3/x,y,z; touch a/1,2,3/x,y,z/a.txt
          $ find . -type d -exec test -f /foo.txt ; -prune -or -print
          ... lots of files ...
          $ touch a/1,2/foo.txt a/3/x,y/foo.txt
          $ find . -type d -exec test -f /foo.txt ; -prune -or -print
          .
          ./a
          ./a/3
          ./a/3/z
          ./a/3/z/a.txt


          Of course, instead of the test -f ... static command you can use eg. path/to/some/script .... With GNU find (the default in Linux) you can use -execdir instead of -exec.






          share|improve this answer

























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            1 Answer
            1






            active

            oldest

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            active

            oldest

            votes






            active

            oldest

            votes









            1














            Yes, -exec is a predicate just like -name, and find will consider the exit status of the command and treat it as false if it's non-zero.



            But notice that a) this only applies to the -exec ... ; form, not to the -exec .. + form (which is always true) and b) forking a separate process for each file or directory is slow.



            For example this will skip all directories that contain a file named foo.txt:



            find . -type d -exec test -f /foo.txt ; -prune -or -print

            $ mkdir -p a/1,2,3/x,y,z; touch a/1,2,3/x,y,z/a.txt
            $ find . -type d -exec test -f /foo.txt ; -prune -or -print
            ... lots of files ...
            $ touch a/1,2/foo.txt a/3/x,y/foo.txt
            $ find . -type d -exec test -f /foo.txt ; -prune -or -print
            .
            ./a
            ./a/3
            ./a/3/z
            ./a/3/z/a.txt


            Of course, instead of the test -f ... static command you can use eg. path/to/some/script .... With GNU find (the default in Linux) you can use -execdir instead of -exec.






            share|improve this answer





























              1














              Yes, -exec is a predicate just like -name, and find will consider the exit status of the command and treat it as false if it's non-zero.



              But notice that a) this only applies to the -exec ... ; form, not to the -exec .. + form (which is always true) and b) forking a separate process for each file or directory is slow.



              For example this will skip all directories that contain a file named foo.txt:



              find . -type d -exec test -f /foo.txt ; -prune -or -print

              $ mkdir -p a/1,2,3/x,y,z; touch a/1,2,3/x,y,z/a.txt
              $ find . -type d -exec test -f /foo.txt ; -prune -or -print
              ... lots of files ...
              $ touch a/1,2/foo.txt a/3/x,y/foo.txt
              $ find . -type d -exec test -f /foo.txt ; -prune -or -print
              .
              ./a
              ./a/3
              ./a/3/z
              ./a/3/z/a.txt


              Of course, instead of the test -f ... static command you can use eg. path/to/some/script .... With GNU find (the default in Linux) you can use -execdir instead of -exec.






              share|improve this answer



























                1












                1








                1







                Yes, -exec is a predicate just like -name, and find will consider the exit status of the command and treat it as false if it's non-zero.



                But notice that a) this only applies to the -exec ... ; form, not to the -exec .. + form (which is always true) and b) forking a separate process for each file or directory is slow.



                For example this will skip all directories that contain a file named foo.txt:



                find . -type d -exec test -f /foo.txt ; -prune -or -print

                $ mkdir -p a/1,2,3/x,y,z; touch a/1,2,3/x,y,z/a.txt
                $ find . -type d -exec test -f /foo.txt ; -prune -or -print
                ... lots of files ...
                $ touch a/1,2/foo.txt a/3/x,y/foo.txt
                $ find . -type d -exec test -f /foo.txt ; -prune -or -print
                .
                ./a
                ./a/3
                ./a/3/z
                ./a/3/z/a.txt


                Of course, instead of the test -f ... static command you can use eg. path/to/some/script .... With GNU find (the default in Linux) you can use -execdir instead of -exec.






                share|improve this answer















                Yes, -exec is a predicate just like -name, and find will consider the exit status of the command and treat it as false if it's non-zero.



                But notice that a) this only applies to the -exec ... ; form, not to the -exec .. + form (which is always true) and b) forking a separate process for each file or directory is slow.



                For example this will skip all directories that contain a file named foo.txt:



                find . -type d -exec test -f /foo.txt ; -prune -or -print

                $ mkdir -p a/1,2,3/x,y,z; touch a/1,2,3/x,y,z/a.txt
                $ find . -type d -exec test -f /foo.txt ; -prune -or -print
                ... lots of files ...
                $ touch a/1,2/foo.txt a/3/x,y/foo.txt
                $ find . -type d -exec test -f /foo.txt ; -prune -or -print
                .
                ./a
                ./a/3
                ./a/3/z
                ./a/3/z/a.txt


                Of course, instead of the test -f ... static command you can use eg. path/to/some/script .... With GNU find (the default in Linux) you can use -execdir instead of -exec.







                share|improve this answer














                share|improve this answer



                share|improve this answer








                edited Apr 15 at 2:45

























                answered Apr 15 at 2:12









                mosvymosvy

                10.4k11238




                10.4k11238




















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