I setup this.
http://www.zell-weekeat.com/grunt-sass-with-susy/
It works fine for one run then, if I exit out of the sass watch I can't free up the port.
Fatal error: Port 35729 is already in use by another process.
Then
sudo lsof -i :35729
gives
\COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
grunt 26305 author 12u IPv6 7064373 0t0 TCP *:35729 (LISTEN)
How do I get this port to free up
Just for organization sake, as mentioned in comments:
You should stop a process with Ctrl+C
in the terminal.
Ctrl+Z
will keep it running.
If you need to kill it, find the PID with sudo lsof -i :35729
and then kill -9 PID
.