diff --git a/shell/aliases.sh b/shell/aliases.sh
index aae1f8c..a419de7 100644
--- a/shell/aliases.sh
+++ b/shell/aliases.sh
@@ -26,6 +26,7 @@ alias egs="$DOTBIN/emacs-gui-server"
 alias ma="make"
 alias br="brew"
 alias devnullsmtp="java -jar $DOTBIN/DevNullSmtp.jar"
+alias open_ports="sudo lsof -i -P | grep --color=never -i \"listen\""
 
 # Misc.
 alias weechat="TERM=screen-256color weechat-curses"