1、tcp的连接状态

##netstat -ant|awk -F " " 'NR>2 {++TCP[$NF]} END{for(i in TCP) print i,TCP[i]}'LISTEN 4ESTABLISHED 1

##netstat -ant|awk '/^tcp/{++TCP[$NF]} END{for(i in TCP) print i,TCP[i]}'

LISTEN 4ESTABLISHED 1

2、awk的计算

cat access_blog.log |awk -F " " 'BEGIN{print "kaishi"}{if($9==200)sum+=$10} END{print sum}' kaishi3798