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I want to find a file in an unknown directory and then chmod it. Could you help with that please? So far I wrote find . -type f -name ".pdf" chmod {};

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the man page of find command says that in order to execute a command (in this case chmod) to matching file the command need to be specified using -exec parameter

find . -type f -name "*.pdf" -exec chmod 744 {} \;
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  • Thank you it worked! However, wouldn't this change the permission for all the .pdf files that there are in my computer? I only want it to change the permission for the files inside the mainDir directory/inside the random subdirectory that the user chooses. Cheers – Jim6834 Oct 20 '19 at 11:14
  • @Alec Find command will search for files in all subfolder in the current directory. If you want, you can change the '.' to any directory you want. For example find /home/user/app -type f -name "*.pdf" -exec chmod 744 {} \; will search for all PDF in the /home/user/app directory and it's subdirectory – jrandiny Oct 20 '19 at 11:19
  • @Jim6834 please add the information from your first comment above to your question – steeldriver Oct 20 '19 at 13:44

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