default handling on lookup in port_association file

setup.sh

@@ -1,3 +1,3 @@
 mkdir ~/.local/share/sshin
-cp port_association ~/.local/share/sshin/
+[[ -e ~/.local/share/sshin/port_association ]] || cp port_association ~/.local/share/sshin/
-cp sshin ~/.local/bin || echo "Error in copying executable to .local/bin" && echo "Run: sudo cp sshin /usr/bin/"
+cp sshin ~/.local/bin || echo "Error in copying executable to ~/.local/bin" && echo "Run: sudo cp sshin /usr/bin/"

sshin

@@ -21,7 +21,9 @@ if [[ $1 =~ $re ]]
 then
 	command="${command}192.168.1.$1"
 else
-	port=$(grep $1 ~/.local/share/sshin/port_association | awk '{print $NF}') && command="${command}$1 -p $port"
+	port=$(grep $1 ~/.local/share/sshin/port_association | awk '{print $NF}')
+	command="${command}$1"
+	[[ -n $port ]] && command="${command} -p $port"
 fi
-#echo $command
+echo $command
 $command