awk命令记录

awk ‘条件类型1{动作1} 条件类型2{动作2} …’ filename

awk常用统计命令

1、求和

cat data | awk ‘{sum+=$1} END {print “Sum = “,sum}’

2、求平均

cat data | awk ‘{sum+=$1} END {print “Average = “,sum/NR}’

3、求最大值

cat data | awk ‘BEGIN {max = 0} {if ($1>max) max=$1 fi} END {print “Max = “, max}’

4、求最小值

awk ‘BEGIN {min = 1999999} {if ($1<min) min=$1 fi} END {print “Min = “, min}’