Date: Thu, 1 May 2014 17:57:42 -0400 From: Matthew Pounsett <matt@conundrum.com> To: "freebsd-questions@freebsd.org Mailing List" <freebsd-questions@freebsd.org> Subject: w and who can't display bare IPv6 source addresses Message-ID: <0936E004-7D01-4182-B52C-EAD6AE896D43@conundrum.com>
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On a FreeBSD 9.2 system, it looks like =91w=92 and =91who=92 have a = collection of bugs that conspire to prevent the display of a complete = IPv6 address. I=92m wondering if there are known workarounds for this, = and whether people think this should be one big PR or not=85 First off, =91w -n=92 is ignored in all cases (this is true for v4 and = v6): > w -n 9:38PM up 106 days, 22:23, 2 users, load averages: 0.00, 0.00, 0.00 USER TTY FROM LOGIN@ IDLE WHAT matt pts/0 2001:4900:1044:0:2808:f1 9:38PM - -tcsh (tcsh) matt pts/1 kaywinnit.conundrum.com 9:38PM - w -n One of those logins is from a host with reverse DNS, the other without. = That part is a clear bug. I will also point out that the address without rev DNS is incomplete. = This is the other problem=85 w is not able to readjust for long field = lengths. Widening the terminal doesn=92t help. And, it seems that =91w=92= doesn=92t pay attention to the COLUMNS environment variable defined by = environ(7)=85 at least not for widening the display. This seems like at = least a design flaw, if not a bug. =91who=92 can display a whole IPv6 address in its output if you happen = to not have reverse DNS. But, who doesn=92t implement -n at all, so if = an address has reverse DNS, you=92re stuck. A full 39-character string = representation of an IPv6 address would pad the below line out to = exactly 80 columns, so despite the fact that who=92s man page says it = listens to the COLUMNS environment variable, it doesn=92t need to for = extending the line .. it would fit into a typical 80-column layout = anyway. =85 if only -n existed. The absence of -n here also seems like = a design flaw. > who matt pts/0 May 1 21:38 = (2001:4900:1044:0:2808:f1c9:e677:5045) matt pts/1 May 1 21:38 (kaywinnit.conundrum.com) Does this make sense to anyone else? Should I file a couple PRs about = these tools?
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