I agree bill, it does not make sense, nonetheless on my win98 machine 
(creak creak), the extra space is required.

jim

$Bill Luebkert wrote:

> James Sluka wrote:
>   
> 
> >One more thing to try is to add a trailing space after the directory
> >spec, as in;
> >    system qq{$prog "$dir " $dest}
> >or
> >    my $cmd = qq{$prog "$dir "  "$dest"};
> >
> >I did some quick tests with;
> >##########Perl code
> >my $prog = 'c:\windows\desktop\some-batch.bat';
> >my $dir  = 'c:\windows\desktop\jim';    # no trailing backslash
> >my $dest = 'thelabel';
> >
> ># both the directory and batch files do exist
> >if (-e $prog) {print "prog found\n"} else {print "prog NOT found\n"};
> >if (-d $dir)  {print "dir  found\n"} else {print "dir  NOT found\n"};
> >
> ># Version 1, works
> >system qq{$prog "$dir " $dest}; # quoted $dir in case blanks in path
> >                                # and note the extra space in "$dir "
> >
> ># Version 2, works
> >my $cmd = qq{$prog "$dir "  "$dest"}; # note the extra space in "$dir "
> >print "\n\nCMD ==", $cmd, "=\n";
> >system "$cmd";
> ># end Perl code
> >
> >### some-batch.bat contains
> >echo %1
> >echo %2
> >dir %1
> >
> >The perl code above fails if the trailing space after the dir spec is
> >omitted. The space can be in the original variable or added when the
> >command is created (as I did above).
> >    
> >
> 
> That doesn't make any sense.  There's already one space there why would
> putting two there make a difference ?  Mine worked with just one.
> A trailing \ may make some change, but an extra space seems pretty
> redundant.
> 
> This works fine for me:
> 
> if (-e $prog) { print "$prog found\n" } else { print "$prog NOT found\n" };
> if (-d $dir)  { print "$dir  found\n" } else {
>   mkdir $dir or die; print "$dir NOT found created\n" };
> 
> # $dir =~ s/\//\\/g;	# this is optional for me
> 
> system qq{$prog "$dir" $dest};
> 
> The bat file produces (for my version) :
> 
> %0 = E:/tmp/nvhotbackup.bat
> %1 = "E:/tmp/backup"
> %2 = thelabel
> 
> dir "E:/tmp/backup"
>  Volume in drive E is DATA120
>  Volume Serial Number is 0000-0E20
> 
>  Directory of E:\tmp\backup
> 
> 10/28/2005  10:51 AM    <DIR>          .
> 10/28/2005  10:51 AM    <DIR>          ..
>                0 File(s)              0 bytes
>                2 Dir(s)   7,019,872,256 bytes free
> 
> errorlevel = 0
> cmdline = cmd /c "E:/tmp/nvhotbackup.bat "E:/tmp/backup" thelabel"
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>   
>