Which arithmetic expression will give the most precise answer?

What is the result of this script? txt=Penguins [[ $txt =~ [a-z]{8} ]]; echo $?

How would you change your Bash shell prompt to the following? HAL>

What is the output of this code? VAR="/var/www/html/website.com/html/"; echo "${VAR#*/html}"

If prompted for text at the standard input, you can tell the command you're done entering text with what key combination?

In order for a Bash script to be executed like an OS command, it should start with a shebang line. What does this look like?

Which sed options should you use to change the second-to-last instance of variable to rock so it would read: A constant is a variable that is a rock that isn't variable var="A constant is a variable that is a variable that isn't variable" echo "$var" | sed _____

Which does the below command do? w

Which one is true?

What statement would you use to print this in the console? Shall we play a game? yes\no

What is the output of this code? VAR="This old man came rolling" echo "${VAR//man/rolling}"