this is a linux class. this asks questions using sed commands in linux.

3) Give a sed command that would output every line in a file that did not start with the letter 'a' and end with html ) Write a line in sed to find all phone numbers that look like 1234567890 with (123)456-7890 5) Specify a sed command to replace any number of consecutive blank lines with just one blank line. A blank line is a line that has nothing on it, not even a space