You can of course execute other shell commands
before going into the editor. For example,
in this directory there is a file named for a New Jersey
city. Find out what file it is; then print it with "cat"
and with the editor to check the listings are the same.
2 cups sifted all-purpose flour
1 tablespoon double-acting baking powder
2 cups sifted all-purpose flour
1 tablespoon double-acting baking powder
grep '....' .ocopy | tail -5 >X1