Lemme reiterate Malkavian's suggestion in Re: passing values to another perl program; as we can now tell from your posted code, you're snagging individual lines from the one file, and interpolating those values into your backticks; but as he suggested might be the problem, you've got newlines in there and so the -t is seen as the beginning of a new command. Here's one way to rewrite your code: 

open (EXT, "LDB_EXTID.lst") or die "something";
my @uids = <EXT>; # read in each line as a member of the array
close EXT;

# here's the key line !
chomp @uids; # remove any trailing newlines from every member of @uids

foreach my $uid (@uids) {
    my $output = `ldbtest.pl -e $uid -t 123`;
    last if ++$counter > 10;
}
# stuff you'd do after the loop, if anything

[download]

perl -e 'print "How sweet does a rose smell? "; chomp ($n = <STDIN>); 
+$rose = "smells sweet to degree $n"; *other_name = *rose; print "$oth
+er_name\n"'

[download]

In reply to Re: Re: Re: passing values to another perl program by arturo
in thread passing values to another perl program by treebeard

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