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I give a directory the setgid bit. Then inside that directory I create another directory, and I want it to also have the setgid bit. I have tried something like umask 6002, but it says "octal number out of range." Is there a way to do this?

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2 Answers 2

up vote 3 down vote accepted

By default, it does that. The newly created folders in a directory which has SGID will have the same permission and group ownership:

# ls -ld folder/
drwxr-sr-x 10 quanta quanta 4096 Oct 27 21:32 folder/
# mkdir folder/test
# ls -ld folder/test/
drwxr-sr-x 2 root quanta 4096 Oct 27 21:33 folder/test/
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Ah, I see what happened. This does work when manually creating files, but when using mv to bring in files, the setgid bit is ignored. Is there a way around this? –  dvcolgan Oct 27 '11 at 14:47
    
@dvcolgan: "create" is "mkdir". "mv" is "move into". What are you actually trying to do? –  Nils Oct 27 '11 at 20:58
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a) Use cp -R instead of mv

b) Use find ./path/ -type d -exec chmod g+rwxs {} \; after mv

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