Question

Ubuntu Linux

HW2: 1. Give one line of the Linux command to see your (your login ID) credential data from the passwd file. Use a pipe and grep command.

2. Give one line of the Linux command to calculate the following and save it in the hex to a file calcOut. Use bc and <<<. 3+2*4 Submit Screenshots

HW3: Permission

Show the result clearly after each of the following commands are executed.

1. Create a subdirectory, “HW3”. Write the Linux command.

2. Who owns it? Show it.

3. Can the owner move into the directory HW3? Show why?

4. Write a Linux command with the number to permit all to the owner but nothing to any other.

5. Write a Linux command with no number to change the privilege not to move into HW3 directory.

Submit Screenshot

HW4: networking

Show the result clearly after each of the following commands are executed.

1. Write a Linux command to print the route packets trace to www.mercy.edu.

2. Look up the manual on netstat. Write the netstat command to display all the sockets.

3. Write the netstat command with an option to display all listening tcp ports.

Submit Screenshot

Answer 1

Answer 1
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Answer 2
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Answer 1
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mkdir HW3

Answer 2
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your user name will be there in HW3 creator

Answer 3
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yes

Answer 4
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Answer 5
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chmod 000 HW3

Answer 1
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tracert www.mercy.edu

Answer 2
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man netstat

netstat -a  

Answer 3
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sudo netstat -plnt

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