my $log = `tail -$lines /var/log/syslog|egrep -i '$day'|egrep -i 'deferred'`;

##</code><code>##

my $log = `tail -$lines /var/log/syslog|egrep -i '$day'|egrep -i 'deferred'` or die ("No Deferred messages\n");

##</code><code>##

Use of uninitialized value in pattern match (m//) at dm line 45.
Use of uninitialized value in pattern match (m//) at dm line 51.
Use of uninitialized value in subtraction (-) at dm line 58.
Use of uninitialized value in subtraction (-) at dm line 58.
deferred messages ocurred withing 1 minute of each other