According to this link, unix doesn't store creation date.
But does store last access.
for last access
ls -t # displays in order of date. So the first one is the
ls displays each file on a new line.
so ls -t displays the latest file on the first line etc.
-lt though you'll see that if you don't specify any files.. and it does the directory.. then it gives the total on the first line, so you pick the second line
$ls -lt | sed -n '2p'
A good one would be
ls -t | head -n 1
ls -lt | head
displays the first 10 lines in order first file modified first and you can see which it is