/usr/share/perl/5.22.1/IPC/Open2.pm is in perl-modules-5.22 5.22.1-9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | package IPC::Open2;
use strict;
our ($VERSION, @ISA, @EXPORT);
require 5.000;
require Exporter;
$VERSION = 1.04;
@ISA = qw(Exporter);
@EXPORT = qw(open2);
# &open2: tom christiansen, <tchrist@convex.com>
#
# usage: $pid = open2('rdr', 'wtr', 'some cmd and args');
# or $pid = open2('rdr', 'wtr', 'some', 'cmd', 'and', 'args');
#
# spawn the given $cmd and connect $rdr for
# reading and $wtr for writing. return pid
# of child, or 0 on failure.
#
# WARNING: this is dangerous, as you may block forever
# unless you are very careful.
#
# $wtr is left unbuffered.
#
# abort program if
# rdr or wtr are null
# a system call fails
require IPC::Open3;
sub open2 {
local $Carp::CarpLevel = $Carp::CarpLevel + 1;
return IPC::Open3::_open3('open2', $_[1], $_[0], '>&STDERR', @_[2 .. $#_]);
}
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