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Re: loop inside system command

by cidaris (Friar)
on Jul 17, 2002 at 14:18 UTC ( #182432=note: print w/replies, xml ) Need Help??


in reply to loop inside system command

I got this to work: 
my $command_line = "";
my $first_build = "hi.bld";
my @other_builds = qw( low.bld hello.bld cow.bld );
$command_line = "c:\\execu $first_build";
$command_line .= " " . shift @other_builds while (@other_builds);
$command_line .= " file.c";
print "$command_line\n";
system "$command_line\n";

[download]


Hope it helps.
cidaris

Replies are listed 'Best First'.
Re: Re: loop inside system command
by RMGir (Prior) on Jul 17, 2002 at 15:07 UTC
    Interesting, cidaris. But have you ever used the join command?

    It would save you your loop on "while(@other_builds)". 

    $command_line = "c:\\execu $first_build "; # note trailing space
$command_line .= join " ", @other_builds;
$command_line .= " file.c";

    [download]
    The only downside here is that you wind up with 2 spaces between $first_build and file.c if there are no other_builds.

    The problem goes away if you do everything in a join: 

    $command_line .= join " ", ("c:\\execu $first_build",@other_builds,"fi
+le.c");

    [download]

    --
    Mike
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