Get length of string after strlen
npm install strlen
From arguments:``bash$ strlen Any long string15`
bash$ strlen Any long string15
From pipe:`bash$ echo "12345" | strlen5`
bash$ echo "12345" | strlen5
And`bash$ strlen < ~/.ssh/id_rsa.pub 396`
bash$ strlen < ~/.ssh/id_rsa.pub 396
Last:`bash$ strlen Me | cat2``
bash$ strlen Me | cat2