How odd. Try this SSCCE which works fine for me.
#!/usr/bin/env perl
use strict;
use warnings;
use File::Copy 'move';
my $indir = '/tmp/foo';
my $outdir = '/tmp/bar';
mkdir $indir;
mkdir $outdir;
for my $f (qw/a b c/) {
open my $out, '>', "$indir/$f" or die "Opening $f: $!";
print $out 'Woo-hoo!';
close $out;
}
opendir my $dir, $indir or die "Bad Dir $indir: $!";
while (my $infile = readdir ($dir)) {
if ($infile =~ /b/) {
print "Moving '$infile' ...\n";
move ("$indir/$infile", $outdir)
or die "move failed: $! moving $indir/$infile to $outdir"
+.
" while we are in $ENV{PWD}\n";
} else {
print "Skipping '$infile' ...\n";
}
}
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