awk求和、平均值、最大小值

求和

cat data|awk '{sum+=$1} END {print "Sum = ", sum}'

求平均

cat data|awk '{sum+=$1} END {print "Average = ", sum/NR}'

求最大值

cat data|awk 'BEGIN {max = 0} {if ($1>max) max=$1 } END {print "Max=", max}'

求最小值（min的初始值设置一个超大数即可）

awk 'BEGIN {min = 1999999} {if ($1<min) min=$1} END {print "Min=", min}'

求访问次数的Top 10 Resource，可以根据此进行优化

cat output/logs/cookie_logs/`date +%u`/cookie_log|grep -v '172.16'|grep -v '127.0.0.1' |awk -F' '  '{ if(index($1,"219.141.246")!=0) print $2; else print $1  } '|sort|uniq -c|sort -n |tail -n 10