emacs closes when terminal closes

Question

I open a file with emacs through terminal just typing

emacs file.txt

and when I close terminal, emacs closes too, and when I try to execute another thing terminal doesn't let me becuase keeps like this:

how can I solve this?

Answer 1

If you really need a terminal to run emacs, the use the command below

emacs file.txt & nohup

---

From man nohup

nohup - 
run a command immune to hangups, with output to a non-tty

Answer 2

In addition to previous method you can use setsid:

setsid emacs file.txt

man setsid

setsid - run a program in a new session