Re: version retrieval difficulties

The python -V command returns its output to STDERR instead of STDOUT, it seems. so, you probably have to have your OPEN command grab the input from STDERR... maybe like this:

open VERSION, "python -V |", \*STDERR or 
  die "This doesn't work at all: $!\n";
[download]

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Re^2: version retrieval difficulties by Snigwel (Sexton) on Apr 12, 2007 at 20:12 UTC
That's cleared up what exactly is going on, thanks! Now to see what can be done about it :0) ~~~~~~~~~~~~~~~~~~~~~~ Timshel - bloody heck yes.	[reply]
Re^2: version retrieval difficulties by naikonta (Curate) on Apr 13, 2007 at 04:56 UTC
This doesn't work at all Yeah, indeed, `$ perl -le 'open VER, "python -V \|", \STDERR or die $!; Unknown open() mode 'python -V \|' at -e line 1.` [download] Did you even test your code? I usually prefer the backtick operation: `$ perl -le 'chomp($v = qx/tar --version 2>&1/); print $v' tar (GNU tar) 1.15.1` [download] Update*: Just for the record, tar version info goes to STDOUT.	[reply] [d/l] [select]
Re^3: version retrieval difficulties by shandor (Monk) on Apr 13, 2007 at 15:08 UTC
Did you even test your code? Yes, and it didn't work at all, which is why the messages. :) The code wasn't meant to work, but to suggest a possible place to start looking since, after quite a bit of searching, I couldn't find any references to reading from STDERR. I guess I should have put a warning in my post.	[reply]