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Postings from September 2016
Dave Mitchell <davem@iabyn.com> writes:
> When installing a non-devel perl, you typically get a message like the
> following on STDERR:
>
> Warning: perl appears in your path in the following locations beyond where
> we just installed it:
> /bin/perl
> /usr/bin/perl
>
> My thoughts are:
>
> 1) Do we really still need this message? It's very common these days when
> installing perl for the system to already have its own perl.
>
> 2) If we do need this message, should it be downgraded from 'Warning' to
> 'Note' and be sent to STDOUT rather than STDERR? Because there's nothing
> wrong with having multiple perls installed, and warning implies you're
> doing something wrong.
The purpose of STDERR is not to output just error messages, but all kind
of diagnostic messages --- in contrast to STDOUT, which usually contains
data, possibly processed in a pipe.
So if it changes to a note, it should still go to STDERR.
(That's why STDOUT is usually buffered while STDERR is not --- you want
to see the diagnostics as fast as possible, while the potentially large
data should be processed as fast as possible)
Regards,
Slaven
--
Slaven Rezic - slaven <at> rezic <dot> de
BBBike - route planner for cyclists in Berlin
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