system("/home/me/ipinfo.pl $_ >$output 2>&1");
It is very unsafe (imagine somebody writing "; rm -rf /*" in the input file). Try using IPC::Run, which does all redirections itself.
Sorry if my advice was wrong.

In reply to Re: BOTH STOUT and STDERR to same file. by aitap
in thread BOTH STOUT and STDERR to same file. by hmb104

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