Re: [Fab-user] "Other users are logged in" messages being captured by run()

[Jeff Forcier]

Chopping out the offending text is certainly one option, but it's more
addressing the symptom; I'd guess the root cause is something in
Chris' shell login files (or the global ones they may source) calling
'who' or whatnot.

If that is the case then you'd have to figure out which is more
important, having that run when you log in by hand, or having clean
output when scripting SSH connections to the server (as w/ Fabric).
You could also try setting env.use_shell = False to disable the shell
wrapper, which would then skip those login files (at the cost of
possibly losing some shell niceties for more complex commands).

Best,
Jeff


On Tue, Dec 18, 2012 at 12:00 PM, 686f6c6d <address@hidden> wrote:
> (Sorry, forgot to reply to the list, too.)
>
>
> I also can't tell you how those strings appear, but you can easily
> work around it; you can do something like the following, for example.
> If replace() or sub() don't find a match (when no other users are
> logged in), the string remains unchanged.
>
> ---------- 8< ----------
> import re
>
> foo = run('some command')
> print('debug #1: %s' % foo)
>
> foo = foo.replace('Other users are logged in\n','')
> print('debug #2: %s' % foo)
>
> foo = 
> re.sub(r'[a-z]+\s+pts/\d+\s+\d{4}-\d{1,2}-\d{1,2}\s+\d{1,2}:\d{2}\s+\(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}\)\n','',foo)
> print('debug #3: %s' % foo)
> ---------- >8 ----------
>
> The regex is a bit coarse (as are my python skills), but it should work.
>
>
> --
> Kind regards
>     Christopher 'm4z' Holm / 686f6c6d
>
> "We must respect the other fellow's religion, but only in the sense
> and to the extent that we respect his theory that his wife is
> beautiful and his children smart." --H. L. Mencken
>
> _______________________________________________
> Fab-user mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/fab-user



-- 
Jeff Forcier
Unix sysadmin; Python/Ruby engineer
http://bitprophet.org