Re: Using IPC::Open3 instead of backtick operator


Clear questions and runnable code get the best and fastest answer
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by RonW (Parson)

on Jun 09, 2016 at 16:26 UTC ( [id://1165238]=note: print w/replies, xml )

Need Help??

The core module IO::Pipe is easy to use and works on both Linux and MS Windows. However, it doesn't handle STDERR.

The reader and writer methods expect a program to run and a list of arguments. The shell is not used.

#!perl
use strict;
use warnings;
use IO::Pipe;

my $pipe = IO::Pipe->new();
$pipe->reader(qw(ls -l));
while(<$pipe>) {
    ...
}
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Re^2: Using IPC::Open3 instead of backtick operator by ikegami (Patriarch) on Jun 10, 2016 at 15:57 UTC
This is the equivalent of doing `no warnings;`. It simply silences the message without addressing the issue (preventing error log from being filled with child's STDERR output). If your goal is simply to circumvent `perlcritic`, it provides far better ways of doing that.	[reply] [d/l] [select]
Re^3: Using IPC::Open3 instead of backtick operator by RonW (Parson) on Jun 10, 2016 at 17:39 UTC
True. Is basically a somewhat safer way to accomplish what `qx` or backticks do. My answer was more for completeness.	[reply] [d/l]

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