in reply to Swapping names of list while keeping the contents as it is.
cut -f2- -d ' ' list.txt| sed '1~2 s/^/bob /' | sed '2~2 s/^/jay /'
Throwing nuclear weapons into the sun
Making everybody on Earth disappear
A threat from an alien with a mighty robot
A new technology or communications medium
Providing a magic fish to a Miss Universe
Establishing a Group mind
Results (199 votes). Check out past polls.