Calculate by using AWK

2019独角兽企业重金招聘Python工程师标准>>>

1. cat test.log

0
11
1
2
1
2
7
1
9
10

2. Max

cat test.log | awk '{if(m<$1) m=$1} END{print m}'

3. Min

cat test.log | awk 'BEGIN{m=100000}{if(m>$1) m=$1} END{print m}'

4. Sum

cat test.log | awk '{m+=$1} END{print m;}'

5. Average

cat test.log | awk '{m+=$1} END{print m/NR;}'

6. Median

cat test.log | awk '{print $1}' | sort | awk -v l=`a=(\`wc -l test.log\`); expr ${a[0]} / 2` 'NR==l{print $1}'

转载于:https://my.oschina.net/cofecafe1/blog/758596