A) Recall the chmod program can be utilized to modify permissions on UNIX files. Refer to the lecture notes for the specific syntax for the command. Presume you have a file named myfile.sh that has the following permissions:

1. The user/owner has Read and Write permissions

2. The group owner has Read permissions

3. Everyone else ("other") has Read permissions

For instance, if using the ls -al command on UNIX the permissions might be represented by:

rw-r--r--

You subsequently run two commands:

chmod u+x,o-r myfile.sh

chmod g+x,o+x myfile.sh

What would be the new permissions "mode" be for myfile.sh? Please be careful to note that we are performing two commands here. Your answer should be a decimal number with three digits (for instance, 600 or 777). Each digit represents the decimal equivalent of one of the principals' permissions where a 1 bit represents having the permissions and a 0 bit represents NOT having the permission (that is, rwx = 111, rw- = 110).

B) Recall the chmod program can be utilized to modify permissions on UNIX files. Refer to the lecture notes for the specific syntax for the command. Presume you have a file named myfile.sh that has the following permissions:

1. The user/owner has Read and Write permissions

2. The group owner has Read permissions

3. Everyone else ("other") has Read permissions

For instance, if using the ls -al command on UNIX the permissions might be represented by:

rw-r--r--

You subsequently run the following command (please be careful to note the + and - symbols)

chmod u+x,g+x,o-r myfile.sh

What would be the new permissions "mode" for myfile.sh be? Your answer should be a decimal number with three digits (for instance, 600 or 777). Each digit represents the decimal equivalent of one of the principals' permissions where a 1 bit represents having the permissions and a 0 bit represents NOT having the permission (that is, rwx = 111, rw- = 110).

C) Recall the chmod program can be utilized to modify permissions on UNIX files. Refer to the lecture notes for the specific syntax for the command. Presume you have a file named myfile.sh that has the following permissions:

1. The user/owner has Read and Write permissions

2. The group owner has Read permissions

3. Everyone else ("other") has Read permissions

For instance, if using the ls -al command on UNIX the permissions might be represented by:

rw-r--r--

You subsequently run the following two commands (please be careful to note the + and - symbols, and note that the ORDER in which the commands are executed is important)

chmod 640 myfile.sh

chmod u+x myfile.sh

What would be the new permissions "mode" be for myfile.sh? Please be careful to note that we are performing two commands here. Your answer should be a decimal number with three digits (for instance, 600 or 777). Each digit represents the decimal equivalent of one of the principals' permissions where a 1 bit represents having the permissions and a 0 bit represents NOT having the permission (that is, rwx = 111, rw- = 110).