Rafael Benito rbenito

jrbenito / setdisplay bash function

Last active January 26, 2017 18:55

Set display variable when reconnect to a tmux terminal on a server with many users (display can change on each ssh section)

	function setdisplay ()
	{
	USERID=$(id -u);
	# list all connections by numeric (don´t wait slow DNS)
	# and filter by current user´s listening ports on localhost
	# that that is in the range of 6000 ~ 6999 (generally X ports)
	PORTA=$(netstat -ane\|grep "LISTEN "\|grep "$USERID"\|sort -k8n\|sed -n -e "s/.127\.0\.0\.1:6.$..$ ./\1/p"\|tail -n 1);
	export DISPLAY="localhost:$PORTA.0"
	}