r226103 | des | 2011-10-07 08:10:16 -0500 (Fri, 07 Oct 2011) | 5 lines

Add a -x option that causes ssh-agent(1) to exit when all clients have
disconnected.

--- ssh-agent.1.orig	2015-05-29 03:27:21.000000000 -0500
+++ ssh-agent.1	2015-06-02 09:45:37.025390000 -0500
@@ -43,7 +43,7 @@
 .Sh SYNOPSIS
 .Nm ssh-agent
 .Op Fl c | s
-.Op Fl Dd
+.Op Fl Ddx
 .Op Fl a Ar bind_address
 .Op Fl E Ar fingerprint_hash
 .Op Fl t Ar life
@@ -128,6 +128,8 @@
 .Xr ssh-add 1
 overrides this value.
 Without this option the default maximum lifetime is forever.
+.It Fl x
+Exit after the last client has disconnected.
 .El
 .Pp
 If a commandline is given, this is executed as a subprocess of the agent.