Peek at the top, bottom, and size of a log

Goal

Print three facts about the log file testdata/app.log: its first line, its last line, and how many lines it has.

Example

If the log held these three lines:

alpha
beta
gamma

your script would print:

alpha
gamma
3

Rules

• Edit answer.sh. It is a plain text file of commands, one per line, run from top to bottom.
• Print exactly three lines, in that order. The last one is only digits.
• Read the log with commands. Do not copy its lines into your script: the real checker runs your script on different logs too.

What you'll practice

head, tail, wc -l, and feeding a file in with <.

Run it

gonomicon fetch week-1/02-01-head-tail-and-count-lines
cd 02-01-head-tail-and-count-lines
gonomicon test
gonomicon submit

Hints

1. Three commands, one per line: one for the top, one for the bottom, one to count.
2. head -n 1 FILE and tail -n 1 FILE print one line each.
3. wc -l < FILE prints just the number, with no file name.