use warnings;
use strict;

use IO::File;
use feature('say');

sub openFile{
	my $file = shift;

	#open my $fh, '>' , $file or die $!;

	my $fh = IO::File->new();
    if ($fh->open(">> $file")){
        say "I opened $file";
        $fh->close;
    } else { 
    say "failed to open $file $! ";
    }
}

openFile('C:\Users\Shain\AppData\Roaming\WaterAccount\file.log');
openFile("C:\Users\Shain\AppData\Roaming\WaterAccount\file.log");

openFile('$ENV{APPDATA}\WaterAccount\file.log');
openFile("$ENV{APPDATA}\WaterAccount\file.log");

openFile('C:\\Users\\Shain\\AppData\\Roaming\\WaterAccount\\file.log');
openFile("C:\\Users\\Shain\\AppData\\Roaming\\WaterAccount\\file.log");

openFile('$ENV{APPDATA}\\WaterAccount\\file.log');
openFile("$ENV{APPDATA}\\WaterAccount\\file.log");

openFile('C:\/Users\/Shain\/AppData\/Roaming\/WaterAccount\/file.log');
openFile("C:\/Users\/Shain\/AppData\/Roaming\/WaterAccount\/file.log");

openFile('C:/Users/Shain/AppData/Roaming/WaterAccount/file.log');
openFile("C:/Users/Shain/AppData/Roaming/WaterAccount/file.log");

openFile('$ENV{APPDATA}/WaterAccount/file.log');
openFile("$ENV{APPDATA}/WaterAccount/file.log");

##</code><code>##

C:\Users\OWNER\Documents\Work\Perl>perl file.pl
Unrecognized escape \S passed through at file.pl line 22.
Unrecognized escape \A passed through at file.pl line 22.
Unrecognized escape \R passed through at file.pl line 22.
Unrecognized escape \W passed through at file.pl line 22.
Unrecognized escape \W passed through at file.pl line 25.
failed to open C:\Users\Shain\AppData\Roaming\WaterAccount\file.log No such file
 or directory
failed to open C:SERSSHAINAPPDATAROAMINGWATERACCOUNT&#9792;ILE.LOG Invalid argument
failed to open $ENV{APPDATA}\WaterAccount\file.log No such file or directory
failed to open C:\Users\OWNER\AppData\RoamingWaterAccount&#9792;ile.log Invalid argume
nt
failed to open C:\Users\Shain\AppData\Roaming\WaterAccount\file.log No such file
 or directory
failed to open C:\Users\Shain\AppData\Roaming\WaterAccount\file.log No such file
 or directory
failed to open $ENV{APPDATA}\WaterAccount\file.log No such file or directory
failed to open C:\Users\OWNER\AppData\Roaming\WaterAccount\file.log No such file
 or directory
failed to open C:\/Users\/Shain\/AppData\/Roaming\/WaterAccount\/file.log No suc
h file or directory
failed to open C:/Users/Shain/AppData/Roaming/WaterAccount/file.log No such file
 or directory
failed to open C:/Users/Shain/AppData/Roaming/WaterAccount/file.log No such file
 or directory
failed to open C:/Users/Shain/AppData/Roaming/WaterAccount/file.log No such file
 or directory
failed to open $ENV{APPDATA}/WaterAccount/file.log No such file or directory
failed to open C:\Users\OWNER\AppData\Roaming/WaterAccount/file.log No such file
 or directory