Find directory names with N occurences of a set of characters












0














How to match non-recursively directory names that contain N occurrences of a subset of characters (using find)?



In my specific case, I just want directory names with 6 digits. Here is what worked but is non-specific (it will give me all directory names with digits):



find . -maxdepth 1 -type d -regex './[0-9]+'

ls -d +([0-9])


This worked too, but gave me names of directories beginning with numbers and followed by anything:



find . -maxdepth 1 -type d -name '[0-9]*'


From what I read, I don't know how to make ls match N occurrences because it uses globs and not regular expressions (and I know nothing about globs). And what I can't understand is that non of these worked using find:



find . -maxdepth 1 -type d -regex './[0-9]{6}'

find . -maxdepth 1 -type d -name '[0-9]{6}'

find . -maxdepth 1 -type d -name '[0-9]+'


I have used regular-expressions quite a few times already, and I don't understand what's wrong with my patterns (I'm also surprised I had to specify ./ with -regex )?






find regular-expression directory ls







share|improve this question





























    0














    How to match non-recursively directory names that contain N occurrences of a subset of characters (using find)?



    In my specific case, I just want directory names with 6 digits. Here is what worked but is non-specific (it will give me all directory names with digits):



    find . -maxdepth 1 -type d -regex './[0-9]+'
    
ls -d +([0-9])


    This worked too, but gave me names of directories beginning with numbers and followed by anything:



    find . -maxdepth 1 -type d -name '[0-9]*'


    From what I read, I don't know how to make ls match N occurrences because it uses globs and not regular expressions (and I know nothing about globs). And what I can't understand is that non of these worked using find:



    find . -maxdepth 1 -type d -regex './[0-9]{6}'
    
find . -maxdepth 1 -type d -name '[0-9]{6}'
    
find . -maxdepth 1 -type d -name '[0-9]+'


    I have used regular-expressions quite a few times already, and I don't understand what's wrong with my patterns (I'm also surprised I had to specify ./ with -regex )?






    find regular-expression directory ls







    share|improve this question



























      0












      0








      0







      How to match non-recursively directory names that contain N occurrences of a subset of characters (using find)?



      In my specific case, I just want directory names with 6 digits. Here is what worked but is non-specific (it will give me all directory names with digits):



      find . -maxdepth 1 -type d -regex './[0-9]+'
      
ls -d +([0-9])


      This worked too, but gave me names of directories beginning with numbers and followed by anything:



      find . -maxdepth 1 -type d -name '[0-9]*'


      From what I read, I don't know how to make ls match N occurrences because it uses globs and not regular expressions (and I know nothing about globs). And what I can't understand is that non of these worked using find:



      find . -maxdepth 1 -type d -regex './[0-9]{6}'
      
find . -maxdepth 1 -type d -name '[0-9]{6}'
      
find . -maxdepth 1 -type d -name '[0-9]+'


      I have used regular-expressions quite a few times already, and I don't understand what's wrong with my patterns (I'm also surprised I had to specify ./ with -regex )?






      find regular-expression directory ls







      share|improve this question















      How to match non-recursively directory names that contain N occurrences of a subset of characters (using find)?



      In my specific case, I just want directory names with 6 digits. Here is what worked but is non-specific (it will give me all directory names with digits):



      find . -maxdepth 1 -type d -regex './[0-9]+'
      
ls -d +([0-9])


      This worked too, but gave me names of directories beginning with numbers and followed by anything:



      find . -maxdepth 1 -type d -name '[0-9]*'


      From what I read, I don't know how to make ls match N occurrences because it uses globs and not regular expressions (and I know nothing about globs). And what I can't understand is that non of these worked using find:



      find . -maxdepth 1 -type d -regex './[0-9]{6}'
      
find . -maxdepth 1 -type d -name '[0-9]{6}'
      
find . -maxdepth 1 -type d -name '[0-9]+'


      I have used regular-expressions quite a few times already, and I don't understand what's wrong with my patterns (I'm also surprised I had to specify ./ with -regex )?






      find regular-expression directory ls




      find regular-expression directory ls






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Dec 16 at 4:22









      Rui F Ribeiro

      38.9k1479129




      38.9k1479129










      asked Jun 21 '15 at 16:05









      Sheljohn

      5663620




      5663620






















          1 Answer
          1






          active

          oldest

          votes


















          4














          The default regex type for GNU find is emacs, which doesn't support intervals. You can specify different regex types, such as posix-egrep, which will solve your issue:



          find . -maxdepth 1 -type d -regextype posix-egrep -regex './[0-9]{6}'





          share|improve this answer





















          • Thank you, I also just found this while browsing SO: stackoverflow.com/questions/6844785/…. Would you know how to do it using -name?
            – Sheljohn
            Jun 21 '15 at 16:12












          • @Sh3ljohn -name '[0-9][0-9][0-9][0-9][0-9][0-9]'. Same thing with ls: ls -d [0-9][0-9][0-9][0-9][0-9][0-9].
            – lcd047
            Jun 21 '15 at 16:20












          • @lcd047 Sarcasm.. right? :D
            – Sheljohn
            Jun 21 '15 at 16:42






          • 2




            @Sh3ljohn Nope, serious answer, sadly. :) That's how glob works. If there's another way to make glob match exactly 6 digits, I'm not aware of it...
            – lcd047
            Jun 21 '15 at 17:30











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          1 Answer
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          1 Answer
          1






          active

          oldest

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          active

          oldest

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          active

          oldest

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          4














          The default regex type for GNU find is emacs, which doesn't support intervals. You can specify different regex types, such as posix-egrep, which will solve your issue:



          find . -maxdepth 1 -type d -regextype posix-egrep -regex './[0-9]{6}'





          share|improve this answer





















          • Thank you, I also just found this while browsing SO: stackoverflow.com/questions/6844785/…. Would you know how to do it using -name?
            – Sheljohn
            Jun 21 '15 at 16:12












          • @Sh3ljohn -name '[0-9][0-9][0-9][0-9][0-9][0-9]'. Same thing with ls: ls -d [0-9][0-9][0-9][0-9][0-9][0-9].
            – lcd047
            Jun 21 '15 at 16:20












          • @lcd047 Sarcasm.. right? :D
            – Sheljohn
            Jun 21 '15 at 16:42






          • 2




            @Sh3ljohn Nope, serious answer, sadly. :) That's how glob works. If there's another way to make glob match exactly 6 digits, I'm not aware of it...
            – lcd047
            Jun 21 '15 at 17:30
















          4














          The default regex type for GNU find is emacs, which doesn't support intervals. You can specify different regex types, such as posix-egrep, which will solve your issue:



          find . -maxdepth 1 -type d -regextype posix-egrep -regex './[0-9]{6}'





          share|improve this answer





















          • Thank you, I also just found this while browsing SO: stackoverflow.com/questions/6844785/…. Would you know how to do it using -name?
            – Sheljohn
            Jun 21 '15 at 16:12












          • @Sh3ljohn -name '[0-9][0-9][0-9][0-9][0-9][0-9]'. Same thing with ls: ls -d [0-9][0-9][0-9][0-9][0-9][0-9].
            – lcd047
            Jun 21 '15 at 16:20












          • @lcd047 Sarcasm.. right? :D
            – Sheljohn
            Jun 21 '15 at 16:42






          • 2




            @Sh3ljohn Nope, serious answer, sadly. :) That's how glob works. If there's another way to make glob match exactly 6 digits, I'm not aware of it...
            – lcd047
            Jun 21 '15 at 17:30














          4












          4








          4






          The default regex type for GNU find is emacs, which doesn't support intervals. You can specify different regex types, such as posix-egrep, which will solve your issue:



          find . -maxdepth 1 -type d -regextype posix-egrep -regex './[0-9]{6}'





          share|improve this answer












          The default regex type for GNU find is emacs, which doesn't support intervals. You can specify different regex types, such as posix-egrep, which will solve your issue:



          find . -maxdepth 1 -type d -regextype posix-egrep -regex './[0-9]{6}'






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Jun 21 '15 at 16:11









          jordanm

          30.2k28292




          30.2k28292












          • Thank you, I also just found this while browsing SO: stackoverflow.com/questions/6844785/…. Would you know how to do it using -name?
            – Sheljohn
            Jun 21 '15 at 16:12












          • @Sh3ljohn -name '[0-9][0-9][0-9][0-9][0-9][0-9]'. Same thing with ls: ls -d [0-9][0-9][0-9][0-9][0-9][0-9].
            – lcd047
            Jun 21 '15 at 16:20












          • @lcd047 Sarcasm.. right? :D
            – Sheljohn
            Jun 21 '15 at 16:42






          • 2




            @Sh3ljohn Nope, serious answer, sadly. :) That's how glob works. If there's another way to make glob match exactly 6 digits, I'm not aware of it...
            – lcd047
            Jun 21 '15 at 17:30


















          • Thank you, I also just found this while browsing SO: stackoverflow.com/questions/6844785/…. Would you know how to do it using -name?
            – Sheljohn
            Jun 21 '15 at 16:12












          • @Sh3ljohn -name '[0-9][0-9][0-9][0-9][0-9][0-9]'. Same thing with ls: ls -d [0-9][0-9][0-9][0-9][0-9][0-9].
            – lcd047
            Jun 21 '15 at 16:20












          • @lcd047 Sarcasm.. right? :D
            – Sheljohn
            Jun 21 '15 at 16:42






          • 2




            @Sh3ljohn Nope, serious answer, sadly. :) That's how glob works. If there's another way to make glob match exactly 6 digits, I'm not aware of it...
            – lcd047
            Jun 21 '15 at 17:30
















          Thank you, I also just found this while browsing SO: stackoverflow.com/questions/6844785/…. Would you know how to do it using -name?
          – Sheljohn
          Jun 21 '15 at 16:12






          Thank you, I also just found this while browsing SO: stackoverflow.com/questions/6844785/…. Would you know how to do it using -name?
          – Sheljohn
          Jun 21 '15 at 16:12














          @Sh3ljohn -name '[0-9][0-9][0-9][0-9][0-9][0-9]'. Same thing with ls: ls -d [0-9][0-9][0-9][0-9][0-9][0-9].
          – lcd047
          Jun 21 '15 at 16:20






          @Sh3ljohn -name '[0-9][0-9][0-9][0-9][0-9][0-9]'. Same thing with ls: ls -d [0-9][0-9][0-9][0-9][0-9][0-9].
          – lcd047
          Jun 21 '15 at 16:20














          @lcd047 Sarcasm.. right? :D
          – Sheljohn
          Jun 21 '15 at 16:42




          @lcd047 Sarcasm.. right? :D
          – Sheljohn
          Jun 21 '15 at 16:42




          2




          2




          @Sh3ljohn Nope, serious answer, sadly. :) That's how glob works. If there's another way to make glob match exactly 6 digits, I'm not aware of it...
          – lcd047
          Jun 21 '15 at 17:30




          @Sh3ljohn Nope, serious answer, sadly. :) That's how glob works. If there's another way to make glob match exactly 6 digits, I'm not aware of it...
          – lcd047
          Jun 21 '15 at 17:30


















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