Short Answer:

-What are binary files? What simple quality distinguishes binary files from text files? What Unix/Linux command(s) can be used to identify a file as binary as opposed to text.

-In no more than 3 sentences, describe the purpose of the kernel. What kernel is our AWS server using?

-What is encryption and what is it's purpose? Demonstrate encrypting a string using sha512.

-The -r option for the remove command rmmeans to perform the action recursively. What is recursion?

-What is the purpose of the grep command? Give an example of using grep that would show every occurrence of the word and in the Gettysburg Address.

-Which would be more suitable for a script that converts each occurrence of the word "and" into the word "or" in the Gettysburg address, sed or tr? Give an example showing how this task would be performed using your preferred method.

-What would be the octal pattern to set the following permissions on a file: -rwxr-x--- 1 ec2-user ec2-user 0 Mar 2 23:05 permissions

-Using the date command, get the current epoch date. Then subtract one billion from it and use the date command again to show the resulting date. Write down the steps you took and the value you received.

-Network functionality in UNIX must be installed separately from the actual operating system. True or false

-To list hidden/suppressed files in a home directory, use the ls -h command. true or flase

-You can use the cat command to combine two files and redirect the output to other files. True or false

-Logic refers to a command's format and wording, as well as the options and arguments you can use to extend and modify its functions. True or false

-To determine which shell you are using in the UNIX operating system, type echo $SHELL. True or false

-The tilda (~) is used to represent the home directory when copying files. True or false

-The touch command differs from the other file processing commands because it is used with relational database processing. True or false

-The paste command normally sends its output to the screen and to capture it you would use a redirection symbol. True or false

-The cat command with the -a option updates the modification time in the catted file's datetime stamp. True or false

-Shell scripts contain ONLY commands they execute. True or false

-A common field that each of several linked files share is often referred to as a key. True or false

-When you run the wc command WITHOUT any options, you will see the count for characters and lines ONLY. True or false

-The uniq command compares ONLY consecutive lines and requires sorted input. True or false

-A pipe operator connects the output of the first command with the input of the second command. True or false

-A(n) ____ is used to create a new file or to overwrite an existing file by attaching it to a command that produces output. True or false