Re: interleaf stdout stderr to a file

You can redirect stdout to stderr within your program using BEGIN{ open STDOUT, '>&STDERR' }; then both will come out interleaved via the unbuffered stderr; and you only need 2>file in order to put everything in a file:

E:\primes>perl -Mstrict -wE"BEGIN{ open STDOUT, '>&STDERR';} say 'hi';
+ warn 1; say 'this is fun'; warn 2; say 'bye'" 2>log

C:\test>type log
hi
1 at -e line 1.
this is fun
2 at -e line 1.
bye
[download]

Note: I think that if you do this at the top of your main script, before you use any modules, their output will also be redirected, but I didn't create a module with warnings to try it.

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Re^2: interleaf stdout stderr to a file by hg2 (Initiate) on Mar 03, 2015 at 15:19 UTC
an interesting solution. did not know stderr was unbuffered by default as looking at the output i originally had it looked to be buffered. thanks...	[reply]