When in Normal mode in vi, which command character can be used to begin a reverse search of the text?

When in Normal mode in vi, which command character will insert a blank line below the current cursor
position and place the insert cursor at the beginning of the new line?

Which of the following sed commands will replace all instances of the string foo with the string foobar
changing the file file1.txt in place?

To ensure that a running process continues to execute after you log out, the process should be started with
what command?

What command will display all of the background tasks running in the current shell?

Which signal is sent by the kill command by default?

In bash, inserting 2>&1 after a command redirects

Which of the following commands will NOT update the Modify timestamp on the file /tmp/myfile.txt?

Which file should be edited to select the network locations from which Debian installation package files are
loaded?

You have created a long letter and after you are done you notice that you used the name “Bob” many times
but you forgot to capitalize it in many instances. Which command would replace “bob” with “Bob” in all
instances and generate a new letter for printing?