☰

需要帮助使用 bash awk 脚本计算人口总数和平均值

tag-icon • tag-icon shell-script awk
需要帮助使用 bash awk 脚本计算人口总数和平均值

需要有人帮忙计算每个地区的总人口并打印地区名称、人口和平均人口。

States.txt（文件）：

State           Population   SqMi      Region 
------------------------------------------
California           39.37   163.7       West
Texas                29.36   268.6      South
Florida              21.73    65.7      South
New_York             19.33    54.7  NorthEast
Pennsylvania         12.78    46.1  NorthEast
Illinois             12.59    57.9    Midwest
Ohio                 11.69    44.8    Midwest
Georgia              10.71    59.4      South
North_Carolina       10.60    53.8      South
Michigan             9.97    96.7    Midwest

**输出应类似于“”

Region Total Average
---------------------------
South 72.40 18.10
Midwest 34.25 11.42
NorthEast 32.11 16.05
West 39.37 39.37

答案1

和awk：

awk '
  FNR>2{ total[$4]+=$2; count[$4]+=1 }
  END{
    print "Region Total Average"
    print "---------------------------"
    for (i in total){ printf "%s %.2f %.2f" ORS, i, total[i], total[i]/count[i] }
  }
' States.txt

相关内容