It looks like you are assigning all of the resulting lines of the mminfo command into a single scalar instead of an array. Try changing this line

my $call = `mminfo -r 'volume,state,written,%used,space,pool,location,
+ssinsert' -q 'ssinsert <= three week ago`;
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to

my @call = `mminfo -r 'volume,state,written,%used,space,pool,location,
+ssinsert' -q 'ssinsert <= three week ago`;
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and change the loop so that you are matching against each line returned which will be in $_, not $call.

foreach ( @call )
{
    if ( /Daily\S+\s/ )
    {
        print "Daily true $_ .\n";
    }
    else
    {
        print "Not found\n";
    }
}
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I hope this is of use.

Cheers,

JohnGG

Update: The OP seems to be a work in progress with silent updates occurring willy-nilly. The code problems I addressed in this reply no longer appear in the OP.