Its either %PATH% or permissions
C:\tmp>which dir
which: no dir in (.;C:/WINDOWS;C:/WINDOWS/System32;C:/WINDOWS/System32
+/Wbem;C:/Perl/bin;C:/Program Files/gnuwin32/bin)
C:\tmp>which cmd
C:/WINDOWS/system32/cmd.EXE
C:\tmp>perl -V:sh
sh='cmd /x /c';
C:\tmp>perl -le"print `dir`"
Volume in drive C has no label.
Volume Serial Number is 1QQ1-0EF1
Directory of C:\tmp
08/22/2009 08:57 PM <DIR> .
08/22/2009 08:57 PM <DIR> ..
08/22/2009 08:57 PM 13 one
1 File(s) 13 bytes
2 Dir(s) 3,758,039,040 bytes free
C:\tmp>perl -le"print `cmd /x /c dir`"
Volume in drive C has no label.
Volume Serial Number is 1QQ1-0EF1
Directory of C:\tmp
08/22/2009 08:57 PM <DIR> .
08/22/2009 08:57 PM <DIR> ..
08/22/2009 08:57 PM 13 one
1 File(s) 13 bytes
2 Dir(s) 3,757,842,432 bytes free
C:\tmp>perl -le"undef $ENV{PATH};print `dir`"
C:\tmp>perl -le"undef $ENV{PATH};print `C:\\WINDOWS\\system32\\cmd.EXE
+ /x /c dir`"
Volume in drive C has no label.
Volume Serial Number is 1QQ1-0EF1
Directory of C:\tmp
08/22/2009 08:57 PM <DIR> .
08/22/2009 08:57 PM <DIR> ..
08/22/2009 08:57 PM 13 one
1 File(s) 13 bytes
2 Dir(s) 3,756,990,464 bytes free
C:\tmp>
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