INTRODUCTION TO UNIX ==================== LAB #4 1. Write a shell script that will: Read your name from the standard input into a variable. Read your street address into a second variable. Read your city and state into a third variable. Print the contents of all the variables on the standard output and identify the output with headings. Put the shell program in a file named genlabel. 2. Write a shell program that accepts a single argument. Search the output of the "who" command for the value of this argument. Put this shell program in a file called lookup. Example: $who alex tty25 Apr 24 20:18 hutch tty15 Apr 24 21:22 $lookup alex alex tty25 Apr 24 20:18 $lookup hutch hutch tty15 Apr 24 21:22