Don't shutdown nc(1)'s network socket when stdin closes. Matches *Hobbit*'s

original netcat and GNU netcat; revert to old behaviour with the new -N flag
if needed. After much discussion with otto deraadt tedu and Martin Pelikan.
ok deraadt@

1 files changed, 7 insertions, 3 deletions

diff --git a/src/usr.bin/nc/nc.1 b/src/usr.bin/nc/nc.1
index 232b6f5b6e..6fdb56e7e3 100644
--- a/src/usr.bin/nc/nc.1
+++ b/src/usr.bin/nc/nc.1
@@ -1,4 +1,4 @@
-.\"     $OpenBSD: nc.1,v 1.61 2012/07/07 15:33:02 haesbaert Exp $
+.\"     $OpenBSD: nc.1,v 1.62 2013/03/20 09:27:56 sthen Exp $
 .\"
 .\" Copyright (c) 1996 David Sacerdote
 .\" All rights reserved.
@@ -25,7 +25,7 @@
 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd $Mdocdate: July 7 2012 $
+.Dd $Mdocdate: March 20 2013 $
 .Dt NC 1
 .Os
 .Sh NAME
@@ -34,7 +34,7 @@
 .Sh SYNOPSIS
 .Nm nc
 .Bk -words
-.Op Fl 46DdhklnrStUuvz
+.Op Fl 46DdhklNnrStUuvz
 .Op Fl I Ar length
 .Op Fl i Ar interval
 .Op Fl O Ar length
@@ -137,6 +137,10 @@ options.
 Additionally, any timeouts specified with the
 .Fl w
 option are ignored.
+.It Fl N
+.Xr shutdown 2
+the network socket after EOF on the input.
+Some servers require this to finish their work.
 .It Fl n
 Do not do any DNS or service lookups on any specified addresses,
 hostnames or ports.