$ md tempor

$ cd tempor

$ ls -loanh "<p"
ls: <p: Invalid argument

$ dir /b "<p"
File Not Found

$ echo > last_name_p

$ ls -loanh "<p"
ls: <p: Invalid argument

$ dir /b "<p"
last_name_p

$ perl -le " print -s shift" last_name_p
13

$ perl -le " print -s shift" "<p"
13