If you are new to Perl, do yourself a favor and always enable warnings and strictures at the start of your code, then do youself another favor and use diagnostics:
    use warnings;
    use strict;
    use diagnostics;

>perl -le
"use warnings;
 use strict;
 my $s =  \"c:\myfolder\my.bat\";
 print qq{'$s'};
"
Unrecognized escape \m passed through at -e line 1.
Unrecognized escape \m passed through at -e line 1.
'c:myfoldermy.bat'

>perl -le
"use warnings;
 use strict;
 use diagnostics;
 my $s =  \"c:\myfolder\my.bat\";
 print qq{'$s'};
"
Unrecognized escape \m passed through at -e line 1 (#1)
    (W misc) You used a backslash-character combination which is not
    recognized by Perl.  The character was understood literally, but t
+his may
    change in a future version of Perl.

'c:myfoldermy.bat'
[download]