What does it mean when you attach a "te" at the end of an infinitive (in spanish)?

Question

For example: saludarte, decirte

Answer 1

it's adding 'you' to the infinitive verb.

For example:
Quiero decirte
I want to tell you

Answer 2

It's a diminutive command form.

You don't use the base infinitive, either.

digate or saludate or callate

Answer 3

If this helps te means you.

For example-Te amo means I love you!