What does “&&” do in this batch file?

Question

I received a line of code from someone who answered one of my questions, but I am confused: what do the \"&&\" do in this batch file.

Answer 1

&& runs the second command on the line when the first command comes back successfully, or with an errorlevel of 0. The opposite of && is ||, which runs the second command when the first command is unsuccessful, or with an errorlevel of 1.