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

[Chris Burroughs]

Thanks.  I thought I was running into some weird bash default, but as
you implied there was a `who` deep in a rat's nest of sourced .bashrc files.

On 12/18/2012 03:31 PM, Jeff Forcier wrote:
> 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
> 
> 
>