List readonly files












3














I need to list or show or query for the files in a folder (well, technically, on a USB drive, but I can navigate to it in Finder/Terminal) that are marked readonly.



All the Google-fu in the world just reveals solutions to change permissions but I don't need to do that.



My Dashcam marks videos/images readonly to save them when I press the button on it, but they're still in a folder with a few hundred MOV files, and I need a simple way to filter down to the ones I am looking for.






terminal finder permission







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Steven Evers is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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    3














    I need to list or show or query for the files in a folder (well, technically, on a USB drive, but I can navigate to it in Finder/Terminal) that are marked readonly.



    All the Google-fu in the world just reveals solutions to change permissions but I don't need to do that.



    My Dashcam marks videos/images readonly to save them when I press the button on it, but they're still in a folder with a few hundred MOV files, and I need a simple way to filter down to the ones I am looking for.






    terminal finder permission







    share|improve this question









    New contributor




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























      3












      3








      3







      I need to list or show or query for the files in a folder (well, technically, on a USB drive, but I can navigate to it in Finder/Terminal) that are marked readonly.



      All the Google-fu in the world just reveals solutions to change permissions but I don't need to do that.



      My Dashcam marks videos/images readonly to save them when I press the button on it, but they're still in a folder with a few hundred MOV files, and I need a simple way to filter down to the ones I am looking for.






      terminal finder permission







      share|improve this question









      New contributor




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











      I need to list or show or query for the files in a folder (well, technically, on a USB drive, but I can navigate to it in Finder/Terminal) that are marked readonly.



      All the Google-fu in the world just reveals solutions to change permissions but I don't need to do that.



      My Dashcam marks videos/images readonly to save them when I press the button on it, but they're still in a folder with a few hundred MOV files, and I need a simple way to filter down to the ones I am looking for.






      terminal finder permission




      terminal finder permission






      share|improve this question









      New contributor




      Steven Evers 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









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      share|improve this question




      share|improve this question








      edited 2 days ago









      Nimesh Neema

      14.8k43972




      14.8k43972






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      asked 2 days ago









      Steven Evers

      1161




      1161




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      New contributor





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          3 Answers
          3






          active

          oldest

          votes


















          1














          find . -type f -perm +444 ! -perm +222


          searches for all files (-type f) which are readable (-perm +444) but not writable (! +perm +222).



          If your mind boggles after reading up on -perm in man find you can also use the (significantly slower, especially on slow devices) option of processing the output of findyourself:



          find . -type f -print0 |
          
    xargs -0 -n 1 sh -c '[ -r "$1" -a ! -w "$1" ] && echo "$1"' sh


          This basically takes each file find finds, and runs it through a small shells script to check permissions.



          PS: Hey, I didn't say the second way is less mind-boggling :-)






          share|improve this answer



















          • 1




            Although the second method runs slower, it might be more accurate in certain situations if I am not mistaken with this example test for example: touch test_file; sudo chown root:staff test_file; (the first method fails to list the file, although it is a read-only file for the user)
            – Yoric
            2 days ago








          • 1




            @Yoric There is no general solution for this using find alone, see unix.stackexchange.com/questions/22421/… and the original question linked from there. In the case of the OP it's probably not an issue.
            – nohillside♦
            2 days ago






          • 1




            Thanks, my head is spinning right now, so much to learn digging into "simple questions" :)
            – Yoric
            2 days ago





















          1














          One way is to make use of the -w option in bash to check if the file is writable or not.



          Go into the directory you want to check your files, then enter:



          for RO in $(find . -type f);do [ -r "$RO" ] && [ ! -w "$RO" ] && echo $RO;done



          (credit to www.unix.com)



          [EDIT]



          To deal with spaces in file names, better to use the find -exec way rather than looping into the find:



          find . -type f -exec [ -r {} ] ; -exec [ ! -w {} ] ; -exec echo {} ;


          or



          find . -type f -exec [ -r {} ] ; -exec [ ! -w {} ] ; -print





          share|improve this answer










          New contributor




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


















          • Textually parsing the output from find usually breaks on file names containing space characters and similar. May not be a problem in the context the OP has, but might hit you in other circumstances.
            – nohillside♦
            2 days ago










          • @nohillside Thanks for the head up, I fixed the case replacing the for loop with using find -exec
            – Yoric
            2 days ago










          • My (hopefully) last remark on this: find . -type f -exec [ -r {} -a ! -w {} ] ; -print, much easier to read than the find ... | xargs ... sh -c monstrosity in my own answer :-)
            – nohillside♦
            2 days ago





















          -1














          List the files and grep for the read-only pattern:



          ls -l | grep '^-r--'



          ^ symbol indicates start the line.



          We are filtering only files here by mentioning ^-, after that looking only for read permission files by specifying r--. If you want to filter read & executable permission files, you can use r-x.



          If you want just the filename, you can use below command



          ls -l | grep '^-r--' | awk 'NF>1{print $NF}'



          Printing the file name using above command works, only if you don't have spaces in file name.






          share|improve this answer










          New contributor




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














          • 2




            Grepping the ls -l is a smart way to do it, but beware that your files might start with -rw-r--r-- with root as the owner, and such files won't be listed, even though they aren't writeable for the user.
            – Yoric
            2 days ago








          • 1




            grep ... | awk is usally not required, the second command can be rewritten as ls -l | awk '/^-r--/ {print $NF}'
            – nohillside♦
            2 days ago











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          3 Answers
          3






          active

          oldest

          votes








          3 Answers
          3






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          1














          find . -type f -perm +444 ! -perm +222


          searches for all files (-type f) which are readable (-perm +444) but not writable (! +perm +222).



          If your mind boggles after reading up on -perm in man find you can also use the (significantly slower, especially on slow devices) option of processing the output of findyourself:



          find . -type f -print0 |
          
    xargs -0 -n 1 sh -c '[ -r "$1" -a ! -w "$1" ] && echo "$1"' sh


          This basically takes each file find finds, and runs it through a small shells script to check permissions.



          PS: Hey, I didn't say the second way is less mind-boggling :-)






          share|improve this answer



















          • 1




            Although the second method runs slower, it might be more accurate in certain situations if I am not mistaken with this example test for example: touch test_file; sudo chown root:staff test_file; (the first method fails to list the file, although it is a read-only file for the user)
            – Yoric
            2 days ago








          • 1




            @Yoric There is no general solution for this using find alone, see unix.stackexchange.com/questions/22421/… and the original question linked from there. In the case of the OP it's probably not an issue.
            – nohillside♦
            2 days ago






          • 1




            Thanks, my head is spinning right now, so much to learn digging into "simple questions" :)
            – Yoric
            2 days ago


















          1














          find . -type f -perm +444 ! -perm +222


          searches for all files (-type f) which are readable (-perm +444) but not writable (! +perm +222).



          If your mind boggles after reading up on -perm in man find you can also use the (significantly slower, especially on slow devices) option of processing the output of findyourself:



          find . -type f -print0 |
          
    xargs -0 -n 1 sh -c '[ -r "$1" -a ! -w "$1" ] && echo "$1"' sh


          This basically takes each file find finds, and runs it through a small shells script to check permissions.



          PS: Hey, I didn't say the second way is less mind-boggling :-)






          share|improve this answer



















          • 1




            Although the second method runs slower, it might be more accurate in certain situations if I am not mistaken with this example test for example: touch test_file; sudo chown root:staff test_file; (the first method fails to list the file, although it is a read-only file for the user)
            – Yoric
            2 days ago








          • 1




            @Yoric There is no general solution for this using find alone, see unix.stackexchange.com/questions/22421/… and the original question linked from there. In the case of the OP it's probably not an issue.
            – nohillside♦
            2 days ago






          • 1




            Thanks, my head is spinning right now, so much to learn digging into "simple questions" :)
            – Yoric
            2 days ago
















          1












          1








          1






          find . -type f -perm +444 ! -perm +222


          searches for all files (-type f) which are readable (-perm +444) but not writable (! +perm +222).



          If your mind boggles after reading up on -perm in man find you can also use the (significantly slower, especially on slow devices) option of processing the output of findyourself:



          find . -type f -print0 |
          
    xargs -0 -n 1 sh -c '[ -r "$1" -a ! -w "$1" ] && echo "$1"' sh


          This basically takes each file find finds, and runs it through a small shells script to check permissions.



          PS: Hey, I didn't say the second way is less mind-boggling :-)






          share|improve this answer














          find . -type f -perm +444 ! -perm +222


          searches for all files (-type f) which are readable (-perm +444) but not writable (! +perm +222).



          If your mind boggles after reading up on -perm in man find you can also use the (significantly slower, especially on slow devices) option of processing the output of findyourself:



          find . -type f -print0 |
          
    xargs -0 -n 1 sh -c '[ -r "$1" -a ! -w "$1" ] && echo "$1"' sh


          This basically takes each file find finds, and runs it through a small shells script to check permissions.



          PS: Hey, I didn't say the second way is less mind-boggling :-)







          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited 2 days ago

























          answered 2 days ago









          nohillside♦

          50.9k13109149




          50.9k13109149








          • 1




            Although the second method runs slower, it might be more accurate in certain situations if I am not mistaken with this example test for example: touch test_file; sudo chown root:staff test_file; (the first method fails to list the file, although it is a read-only file for the user)
            – Yoric
            2 days ago








          • 1




            @Yoric There is no general solution for this using find alone, see unix.stackexchange.com/questions/22421/… and the original question linked from there. In the case of the OP it's probably not an issue.
            – nohillside♦
            2 days ago






          • 1




            Thanks, my head is spinning right now, so much to learn digging into "simple questions" :)
            – Yoric
            2 days ago
















          • 1




            Although the second method runs slower, it might be more accurate in certain situations if I am not mistaken with this example test for example: touch test_file; sudo chown root:staff test_file; (the first method fails to list the file, although it is a read-only file for the user)
            – Yoric
            2 days ago








          • 1




            @Yoric There is no general solution for this using find alone, see unix.stackexchange.com/questions/22421/… and the original question linked from there. In the case of the OP it's probably not an issue.
            – nohillside♦
            2 days ago






          • 1




            Thanks, my head is spinning right now, so much to learn digging into "simple questions" :)
            – Yoric
            2 days ago










          1




          1




          Although the second method runs slower, it might be more accurate in certain situations if I am not mistaken with this example test for example: touch test_file; sudo chown root:staff test_file; (the first method fails to list the file, although it is a read-only file for the user)
          – Yoric
          2 days ago






          Although the second method runs slower, it might be more accurate in certain situations if I am not mistaken with this example test for example: touch test_file; sudo chown root:staff test_file; (the first method fails to list the file, although it is a read-only file for the user)
          – Yoric
          2 days ago






          1




          1




          @Yoric There is no general solution for this using find alone, see unix.stackexchange.com/questions/22421/… and the original question linked from there. In the case of the OP it's probably not an issue.
          – nohillside♦
          2 days ago




          @Yoric There is no general solution for this using find alone, see unix.stackexchange.com/questions/22421/… and the original question linked from there. In the case of the OP it's probably not an issue.
          – nohillside♦
          2 days ago




          1




          1




          Thanks, my head is spinning right now, so much to learn digging into "simple questions" :)
          – Yoric
          2 days ago






          Thanks, my head is spinning right now, so much to learn digging into "simple questions" :)
          – Yoric
          2 days ago















          1














          One way is to make use of the -w option in bash to check if the file is writable or not.



          Go into the directory you want to check your files, then enter:



          for RO in $(find . -type f);do [ -r "$RO" ] && [ ! -w "$RO" ] && echo $RO;done



          (credit to www.unix.com)



          [EDIT]



          To deal with spaces in file names, better to use the find -exec way rather than looping into the find:



          find . -type f -exec [ -r {} ] ; -exec [ ! -w {} ] ; -exec echo {} ;


          or



          find . -type f -exec [ -r {} ] ; -exec [ ! -w {} ] ; -print





          share|improve this answer










          New contributor




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


















          • Textually parsing the output from find usually breaks on file names containing space characters and similar. May not be a problem in the context the OP has, but might hit you in other circumstances.
            – nohillside♦
            2 days ago










          • @nohillside Thanks for the head up, I fixed the case replacing the for loop with using find -exec
            – Yoric
            2 days ago










          • My (hopefully) last remark on this: find . -type f -exec [ -r {} -a ! -w {} ] ; -print, much easier to read than the find ... | xargs ... sh -c monstrosity in my own answer :-)
            – nohillside♦
            2 days ago


















          1














          One way is to make use of the -w option in bash to check if the file is writable or not.



          Go into the directory you want to check your files, then enter:



          for RO in $(find . -type f);do [ -r "$RO" ] && [ ! -w "$RO" ] && echo $RO;done



          (credit to www.unix.com)



          [EDIT]



          To deal with spaces in file names, better to use the find -exec way rather than looping into the find:



          find . -type f -exec [ -r {} ] ; -exec [ ! -w {} ] ; -exec echo {} ;


          or



          find . -type f -exec [ -r {} ] ; -exec [ ! -w {} ] ; -print





          share|improve this answer










          New contributor




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


















          • Textually parsing the output from find usually breaks on file names containing space characters and similar. May not be a problem in the context the OP has, but might hit you in other circumstances.
            – nohillside♦
            2 days ago










          • @nohillside Thanks for the head up, I fixed the case replacing the for loop with using find -exec
            – Yoric
            2 days ago










          • My (hopefully) last remark on this: find . -type f -exec [ -r {} -a ! -w {} ] ; -print, much easier to read than the find ... | xargs ... sh -c monstrosity in my own answer :-)
            – nohillside♦
            2 days ago
















          1












          1








          1






          One way is to make use of the -w option in bash to check if the file is writable or not.



          Go into the directory you want to check your files, then enter:



          for RO in $(find . -type f);do [ -r "$RO" ] && [ ! -w "$RO" ] && echo $RO;done



          (credit to www.unix.com)



          [EDIT]



          To deal with spaces in file names, better to use the find -exec way rather than looping into the find:



          find . -type f -exec [ -r {} ] ; -exec [ ! -w {} ] ; -exec echo {} ;


          or



          find . -type f -exec [ -r {} ] ; -exec [ ! -w {} ] ; -print





          share|improve this answer










          New contributor




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









          One way is to make use of the -w option in bash to check if the file is writable or not.



          Go into the directory you want to check your files, then enter:



          for RO in $(find . -type f);do [ -r "$RO" ] && [ ! -w "$RO" ] && echo $RO;done



          (credit to www.unix.com)



          [EDIT]



          To deal with spaces in file names, better to use the find -exec way rather than looping into the find:



          find . -type f -exec [ -r {} ] ; -exec [ ! -w {} ] ; -exec echo {} ;


          or



          find . -type f -exec [ -r {} ] ; -exec [ ! -w {} ] ; -print






          share|improve this answer










          New contributor




          Yoric 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 answer



          share|improve this answer








          edited 2 days ago









          nohillside♦

          50.9k13109149




          50.9k13109149






          New contributor




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









          answered 2 days ago









          Yoric

          2685




          2685




          New contributor




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





          New contributor





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






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












          • Textually parsing the output from find usually breaks on file names containing space characters and similar. May not be a problem in the context the OP has, but might hit you in other circumstances.
            – nohillside♦
            2 days ago










          • @nohillside Thanks for the head up, I fixed the case replacing the for loop with using find -exec
            – Yoric
            2 days ago










          • My (hopefully) last remark on this: find . -type f -exec [ -r {} -a ! -w {} ] ; -print, much easier to read than the find ... | xargs ... sh -c monstrosity in my own answer :-)
            – nohillside♦
            2 days ago




















          • Textually parsing the output from find usually breaks on file names containing space characters and similar. May not be a problem in the context the OP has, but might hit you in other circumstances.
            – nohillside♦
            2 days ago










          • @nohillside Thanks for the head up, I fixed the case replacing the for loop with using find -exec
            – Yoric
            2 days ago










          • My (hopefully) last remark on this: find . -type f -exec [ -r {} -a ! -w {} ] ; -print, much easier to read than the find ... | xargs ... sh -c monstrosity in my own answer :-)
            – nohillside♦
            2 days ago


















          Textually parsing the output from find usually breaks on file names containing space characters and similar. May not be a problem in the context the OP has, but might hit you in other circumstances.
          – nohillside♦
          2 days ago




          Textually parsing the output from find usually breaks on file names containing space characters and similar. May not be a problem in the context the OP has, but might hit you in other circumstances.
          – nohillside♦
          2 days ago












          @nohillside Thanks for the head up, I fixed the case replacing the for loop with using find -exec
          – Yoric
          2 days ago




          @nohillside Thanks for the head up, I fixed the case replacing the for loop with using find -exec
          – Yoric
          2 days ago












          My (hopefully) last remark on this: find . -type f -exec [ -r {} -a ! -w {} ] ; -print, much easier to read than the find ... | xargs ... sh -c monstrosity in my own answer :-)
          – nohillside♦
          2 days ago






          My (hopefully) last remark on this: find . -type f -exec [ -r {} -a ! -w {} ] ; -print, much easier to read than the find ... | xargs ... sh -c monstrosity in my own answer :-)
          – nohillside♦
          2 days ago













          -1














          List the files and grep for the read-only pattern:



          ls -l | grep '^-r--'



          ^ symbol indicates start the line.



          We are filtering only files here by mentioning ^-, after that looking only for read permission files by specifying r--. If you want to filter read & executable permission files, you can use r-x.



          If you want just the filename, you can use below command



          ls -l | grep '^-r--' | awk 'NF>1{print $NF}'



          Printing the file name using above command works, only if you don't have spaces in file name.






          share|improve this answer










          New contributor




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














          • 2




            Grepping the ls -l is a smart way to do it, but beware that your files might start with -rw-r--r-- with root as the owner, and such files won't be listed, even though they aren't writeable for the user.
            – Yoric
            2 days ago








          • 1




            grep ... | awk is usally not required, the second command can be rewritten as ls -l | awk '/^-r--/ {print $NF}'
            – nohillside♦
            2 days ago
















          -1














          List the files and grep for the read-only pattern:



          ls -l | grep '^-r--'



          ^ symbol indicates start the line.



          We are filtering only files here by mentioning ^-, after that looking only for read permission files by specifying r--. If you want to filter read & executable permission files, you can use r-x.



          If you want just the filename, you can use below command



          ls -l | grep '^-r--' | awk 'NF>1{print $NF}'



          Printing the file name using above command works, only if you don't have spaces in file name.






          share|improve this answer










          New contributor




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














          • 2




            Grepping the ls -l is a smart way to do it, but beware that your files might start with -rw-r--r-- with root as the owner, and such files won't be listed, even though they aren't writeable for the user.
            – Yoric
            2 days ago








          • 1




            grep ... | awk is usally not required, the second command can be rewritten as ls -l | awk '/^-r--/ {print $NF}'
            – nohillside♦
            2 days ago














          -1












          -1








          -1






          List the files and grep for the read-only pattern:



          ls -l | grep '^-r--'



          ^ symbol indicates start the line.



          We are filtering only files here by mentioning ^-, after that looking only for read permission files by specifying r--. If you want to filter read & executable permission files, you can use r-x.



          If you want just the filename, you can use below command



          ls -l | grep '^-r--' | awk 'NF>1{print $NF}'



          Printing the file name using above command works, only if you don't have spaces in file name.






          share|improve this answer










          New contributor




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          List the files and grep for the read-only pattern:



          ls -l | grep '^-r--'



          ^ symbol indicates start the line.



          We are filtering only files here by mentioning ^-, after that looking only for read permission files by specifying r--. If you want to filter read & executable permission files, you can use r-x.



          If you want just the filename, you can use below command



          ls -l | grep '^-r--' | awk 'NF>1{print $NF}'



          Printing the file name using above command works, only if you don't have spaces in file name.







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          edited 2 days ago





















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          answered 2 days ago









          BarathVutukuri

          1272




          1272




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          • 2




            Grepping the ls -l is a smart way to do it, but beware that your files might start with -rw-r--r-- with root as the owner, and such files won't be listed, even though they aren't writeable for the user.
            – Yoric
            2 days ago








          • 1




            grep ... | awk is usally not required, the second command can be rewritten as ls -l | awk '/^-r--/ {print $NF}'
            – nohillside♦
            2 days ago














          • 2




            Grepping the ls -l is a smart way to do it, but beware that your files might start with -rw-r--r-- with root as the owner, and such files won't be listed, even though they aren't writeable for the user.
            – Yoric
            2 days ago








          • 1




            grep ... | awk is usally not required, the second command can be rewritten as ls -l | awk '/^-r--/ {print $NF}'
            – nohillside♦
            2 days ago








          2




          2




          Grepping the ls -l is a smart way to do it, but beware that your files might start with -rw-r--r-- with root as the owner, and such files won't be listed, even though they aren't writeable for the user.
          – Yoric
          2 days ago






          Grepping the ls -l is a smart way to do it, but beware that your files might start with -rw-r--r-- with root as the owner, and such files won't be listed, even though they aren't writeable for the user.
          – Yoric
          2 days ago






          1




          1




          grep ... | awk is usally not required, the second command can be rewritten as ls -l | awk '/^-r--/ {print $NF}'
          – nohillside♦
          2 days ago




          grep ... | awk is usally not required, the second command can be rewritten as ls -l | awk '/^-r--/ {print $NF}'
          – nohillside♦
          2 days ago










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