SLG ULI Week 6

Convert 0101001 into octal.

• 41

• 51

• 29

• 8

Convert the octal number 57 into binary.

• 101111

• 110111

• 10100

• 101110

What command lets you change the permission of a pre-existing file/directory?

• chmod

• umask

• Both chmod & umask

• None of the options

In the symbolic method of setting permissions, what does g, u, o and a represent?

In your own words, what is the difference between chmod and umask?

Which permission setting allows you to create and delete files within a directory?

• wx

• r

• w

• x

Add read, and write permission for GROUP for file1 in your current directory.

Current permissions: 700.

Take away write permission from others for file1 present in your home directory.

Current permissions are 777.

Write a command to ensure that ALL groups have read permission on file1, which is present in your root directory.

Current permissions are 000.