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  1. or download this
    while (<INFILE>) {
{
...
  @array = split (/\s+/, $line); 
  . .  .
}
  2. or download this
    my @array;
while (<INFILE>) {
...
  push @array, split(/\s+/, $line); 
  . . .
}
  3. or download this
    if ($line =~ /^Happy\s+30/) {
 print $line . "\n";
}
  4. or download this
    $"=q;grep;;$,=q"grep";for(`find . -name ".saves*~"`){s;$/;;;/(.*-(\d+)
+-.*)$/;

$_=["ps -e -o pid | "," $2 | "," -v "," "];`@$_`?{print"+ $1"}:{print"
+- $1"}&&`rm $1`;
print$\;}