Hello your holinesses,
As my moniker implies, I am new to perl. I am trying to take input from STDIN that looks like this:
xs029
xs030
xs031
xs032
xs034

see if these hosts exist in a file and print the line in the file if they do. The contents of the file I'm searching through looks like this:

xs029 Host Node 129.202.178.129 - - - - - 10.200.178.129
xs030 Host Node 129.202.178.130 - - - - - 10.200.178.130
xs031 Host Node 129.202.178.131 - - - - - 10.200.178.131


and finally, here is my code. For some reason when I run it , it just sits there doing nothing. Any help would be much appreciated! 
$infile="hosts.txt";
open(INPUT, $infile) || die "Error opening $infile\n";
my @allhosts = <INPUT>;
foreach $approvhost (<STDIN>)
    {
    foreach $host (<@allhosts>)
        {
        if ($host =~ m/^$approvhost/)
            {
            print $host;
            }
        }
    }

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In reply to matching a line from one file in another by New_to_this_stuff

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