[RndTbl] Linux "write"
Gilbert E. Detillieux
gedetil at cs.umanitoba.ca
Wed Jun 28 09:33:46 CDT 2017
On 28/06/2017 2:51 AM, Trevor Cordes wrote:
> Can someone else confirm this bug on another Linux system, preferably a
> modern one that uses systemd?
>
> In X, as non-root:
>
> open a term (call it term1)
> open another term (term2)
> type "tty" in term2, not your tty number/string
> in term1: type "write <your-login> <tty-string-from-above>"
>
> replace your-login with the output of "who" if you don't know who you are
> logged in as
>
> please try both /dev/pts/42 and pts/42 format for the tty part of write
>
> example: write trevor pts/42
>
> When I run this I get:
> write: trevor is not logged in on pts/42
>
> Even though I clearly am. This used to work perfectly up until last year
> (I think), and I think systemd changed something (big surprise). No
> chatter about this anywhere that I can see. Probably the last person on
> earth to use write (at least on F24).
>
> I found some other things to test that indicate that something is really
> amiss:
>
>> write trevor
> write: trevor has messages disabled
>
>> mesg
> is y
>
>> mesg y
> mesg
> is y
>
>> write trevor
> write: trevor has messages disabled
>
>> ll /dev/pts/42
> crw--w---- 1 trevor tty 136, 42 Jun 28 02:48 /dev/pts/42
>
>
> If someone else can confirm this bug on a non-Fedora (or a newer one) that
> would be great. If someone can also confirm that the above behaviour is
> insane, that too would be great. If anyone has some ideas on what to try
> next, shoot away! Then I'll file a bz. Thanks!
Works fine for me under SL6.9, SL7.3, and Raspbian/Jessie, all with the
latest updates including kernel. Looks like the latest Fedora is
borked. (And we all know the likely culprit, don't we...)
Gilbert
--
Manitoba UNIX User Group E-mail: <gedetil at muug.ca>
c/o Gilbert E. Detillieux Web: http://muug.ca/
University of Manitoba Phone: (204)474-8161
Winnipeg MB CANADA R3T 2N2 Fax: (204)474-7609
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