$sh = '\\\\machine1\\d\$';
should be
$sh = '\\\\machine1\\d$';
or
$sh = "\\\\machine1\\d\$"; 

$\ = "\n";
print '\\\\machine1\\d\$';   # \\machine1\d\$
print '\\\\machine1\\d$';    # \\machine1\d$
print "\\\\machine1\\d\$";   # \\machine1\d$

[download]

Update:

Some elaboration:

In single quotes strings, you need to escape the delimiter (single quotes) and backslashes followed by another backslash. Lone backslashes may optionally be escaped.

In double quotes strings, you must escape $ (unless you want to interpolate), @ (unless you want to interpolate), the delimiter (double quotes) and backslashes. Other non-alphanumeric characters may optionally be escaped.

Update:

By the way,
{user=>"$us",pass=>"$pa",domain=>"$do"}
is better written as
{user=>$us,pass=>$pa,domain=>$do}
Putting quotes around variables needlessly makes a string copy of them.

In reply to Re: Mapping a drive with Win32::Fileop by ikegami
in thread Mapping a drive with Win32::Fileop by bennyroh

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