open CMD, "/bin/ping -c $count -i $interval -s $packetsize -w $allowableTime $host |" or die "Can't open ping: $!";
 while (<CMD>) {
my (@values1,@val1,@values2,@val2,$val) = 0; 
    if ( $_ =~ /PING/ ){
         @values1 = split ;
    
            @val1 = split(/\(/,$values1[3]);
           $val1[1] =~ s/\)//;
             
      }  
    print "$values1[1] \n";
    print "$val1[0] \n";
}

##</code><code>##

Use of uninitialized value $val in concatenation (.) or string at ./ping_linux.pl line 69, <CMD> line 2.