COMPUTER SCIENCE AND ENGINEERING
UNIX
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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rw-rw-rw-
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rwxrwxrwx
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r-r-r-
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rw-rw-rwx
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Detailed explanation-1: -The system default permission values are 777 ( rwxrwxrwx ) for folders and 666 ( rw-rw-rw-) for files. The default mask for a non-root user is 002, changing the folder permissions to 775 ( rwxrwxr-x ), and file permissions to 664 ( rw-rw-r–).
Detailed explanation-2: -Directory: Permission to read, but not search, contents. File: Permission to read or print contents. To run a shell script, you need both read and execute permission.
Detailed explanation-3: -(rwxrwxrwx) No restrictions on permissions. Anybody may do anything. Generally not a desirable setting. (rwxr-xr-x) The file’s owner may read, write, and execute the file.
Detailed explanation-4: -Hence the-rwxrwxrwx above indicates that user, group, and other have read, write and execute permissions for that file or in other words: the owner of the file, anyone in the file’s group, and everybody else has read, write, and execute permissions for that file).
Detailed explanation-5: -As you might remember, the default file permission value is 0644, and the default directory’s is 0755.