CVS commit: src/usr.bin/nc

Module Name:	src
Committed By:	kre
Date:		Sun Mar  1 06:22:09 UTC 2026

Modified Files:
	src/usr.bin/nc: nc.1 netcat.c

Log Message:
Add -E to limit number of net packets sent/rcvd

Specifying -E n or -E s/r (where s & r can be empty)
limits the number of network packets that will be sent
to n or s (whichever is specified) and the number of
network packets that will be received before exiting to
n (or r).  Specifying 0 (or omitting s or r) means no limit
(which remains the default).   Either a digit, or '/' is required.
Leading spaces before n or s are permitted, but no others.

It is OK (and meaningless) to specify -E/  -- this is
deliberate to simplify scripting ("-E $ms/$mr") where either
ms or mr (or both) might be absent.

While adding doc for this to nc.1 reword all references to
"illegal" - nothing in the way nc(1) is used should result
in anyone being prosecuted (or not for not using appropriate
arg combinations anyway).


To generate a diff of this commit:
cvs rdiff -u -r1.3 -r1.4 src/usr.bin/nc/nc.1
cvs rdiff -u -r1.7 -r1.8 src/usr.bin/nc/netcat.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.