(Linux)

Using the file /opt/ci132/data/lab13/name_ssn as sample input:

/opt/ci132/data/lab13 contains:

name_ssn sshd_logged

name_ssn is not a directory

- Display only names from the file

- Sort the file by first name

- Sort the file by last name

- Sort the file by social security number

Extra Credit: Count the total number of lines across the three files people1, people2, and people3 using the wc l command. With a single command line argument.