日志文本筛选-sort awk
求最大值：
awk 'BEGIN {max = 0} {if ($1+0 > max+0) max=$1} END {print "Max=", max}' test.txt
求最小值：
awk 'BEGIN {min = 65536} {if ($1+0 < min+0) min=$1} END {print "Min=", min}' test.txt
求和：
cat test.txt|awk '{sum+=$1} END {print "Sum= ", sum}'
求平均值：
cat test.txt|awk '{sum+=$1} END {print "Avg= ", sum/NR}'
求最大值
cat test.txt|awk 'BEGIN {max = 0} {if ($1>max) max=$1 fi} END {print "Max=", max}
求最大值
cat test.txt|awk 'BEGIN {max = 0} {if ($1+0>max+0) max=$1 fi} END {print "Max=", max}'
求最小值
cat test.txt|awk 'BEGIN{min = 65536}{if ($1+0<min+0) min=$1 fi}END{print "Min=", min}'
中位数
#/usr/bin/env awk
{
count[NR] = $1;
}
END {
if (NR % 2) {
print count[(NR + 1) / 2];
} else {
print (count[(NR / 2)] + count[(NR / 2) + 1]) / 2.0;
}
}
