Shell Programming and Scripting

I have to create a unix program that will mail the contents of a file to a list of users.The file to be mailed will be provided as an argument to the program on the command line. The list of users or mail recipients should be a ”variable” that is created inside the program

This program MUST be created with just two lines of code. (Hint: make the variable “list” on one line, and the mail on the next line.)

Does anyone have an idea on how to do this? I can't figure out the second line

Line1 list= "email1, email2, email3"
Line2 mail $list > something?

You are 90% there. The message to be sent is the first parameter to the script "$1". To preserve the contents of $list it needs to be in double quotes on the mail line. The mail command reads from standard input (in this case it reads from a pipe).

list= "email1, email2, email3" # Line 1
echo "$1" | mail "$list" # Line 2