. A file display (named filedisp) program

filedisp receives text (multiple lines) from standard input, accepts one of the three options: -d, -f and -b, and displays one line from the input accordingly to the given option.

If the option was -d it displays the input line that has the word 'directories'.

If the option was -f it displays the input line that has the word 'files'.

If the option was -b it displays the input line that has the word 'bytes'.