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 _____

To make a Bash script named script.sh executable, what should you run?

How can you create a shared terminal in a Bash shell?

Wich operator sends the output of ls to a file for later use?

When comparing items with case, what statement indicates an end to the evaluation block?

To run a group of commands without spawning a subshell, which syntax would you use?

Which arithmetic expression will give the most precise answer?

What is the keyboard shortcut to call up the Bash history search as shown below? (reverse-i-search)`':

In order to extract text from the first column of file called textfile, which command would you use?

How does the SUID or setuid affect executable commands?

If file.sql holds SQL statements to be executed, what will be in file.txt? mysql < file.sql > file.txt