Q. If the file is write-protected and the directory has write permission then we cannot delete the file.

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Q. What is execute permission?

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Q. Which of the following is default permission set for ordinary files?

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Q. Which of the following is default permission set for directories?

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Q. A file owner does not have a permission to edit the file but the group to which the file owner belong do have the permission to edit it. Can owner edit the file?

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Q. What does the following command do?

$ chmod ugo +w file01.txt

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Q. Which character is used to replace ‘ugo’ string in chmod command?

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Q. Which command is used to change the group owner of the file?

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Q. A user can change the group ownership of a file to another group to which he does not belong.

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Q. Like chmod, chown and chgrp can also use ___ option.

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Q. UNIX allows the system administrator to use only chown to change both owner and group

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Q. Which symbol is used to change permissions for hidden files?

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Q. A hard-linked file is assigned the same inode number as the original value.

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Q. If we want to link files across the file systems, we have to use only soft links.

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

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Q. We can change the default permission set for files and directories using ______

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Q. Which command is used to change timestamps associated with a file?

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Q. When touch command is used without any options or expression, both times are set to current time and the file is created if it doesn’t exist.

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Q. Which option is used with touch command to change the time of last file modification?

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Q. -a option is used with touch command to alter the time of last access.

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