bash-2.05$ grep "\[\*\*\]" alert | sort | uniq -c
1796 [**] [1:1855:2] DDOS Stacheldraht agent->handler (skillz) [**]
79008 [**] [1:241:2] DDOS shaft synflood [**]
83 [**] [1:480:2] ICMP PING speedera [**]
1 [**] [1:485:2] ICMP Destination Unreachable (Communication Administratively Prohibited) [**]
757 [**] [1:499:3] ICMP Large ICMP Packet [**]