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The default permissions for a regular file are ____ and for directories are ____

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The default permissions for a regular file are ____ and for directories are ____

(a) 777, 666

(b) 666, 777

(c) 000, 000

(d) 777, 777

I had been asked this question in unit test.

Query is from Advanced File Handling Commands topic in chapter Customizing the Environment & More File Attributes of Unix

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The correct choice is (b) 666, 777

Easy explanation: When we create a file or a directory, the permissions assigned to them depend on the system’s default settings. The default permissions for regular files in UNIX system are 666 (in octal) or rw-rw-rw- and for directories are 777 (in octal) or rwxrwxrwx.

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