1. Write a command using octal notation to change the file permissions of notes file so that the owner of the file has all permissions, the group users have the read and execute permissions, and the others only have the read permission.

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2. Assume you dont know the file permissions of a file named olddoc. Write a command using symbolic notation to remove all permissions for the other users, but dont change permissions for the owner and group users.

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3. Given the following file system structure:

Assume your current working directory is bills home directory, answer the following questions:

1. What is the absolute path of bills school directory? Ans:

7/2) What is the absolute path to patricks home directory?

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3. What is the relative path from the current working directory (which is bills home directory) to patricks school directory?

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4. What is the relative path from the current working directory (which is bills home directory) to bills books directory?

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bin dev etc home Imp UST bill patrick books school school