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$memcmd=`/usr/sbin/prtconf | grep Memory`;

$memcmd="/usr/sbin/prtconf | grep Memory |";

@memcmd_output = `/usr/sbin/prtconf | grep Memory`;

for my $line( @memcmd_output ){
   # ... do your stuff on $line
}

s**lil*;  $*=join'',sort split q**;  s;.*;grr; &&s+(.(.)).+$2$1+; $; =
qq-$_-;s,.*,ahc,;$,.=chop for split q,,,reverse;print for($,,$;,$*,$/)