比較和計算每一個和2個文件中的awk

Question

我想絕對差請問如何比較和計算兩個文件之間的差異與AWK

FILE1.TXT

orange 30 
banana 25 
apple 30 
pear 35 

文件2 .TXT

orange 25 
apple 32 
jackfruit 15 
pear 40 
pineapple 20 

輸出應爲兩個，並存儲在

之間的差值（與絕對值）

file3.txt：

orange 5 
banana 25 
apple 2 
pear 5 
jackfruit 15 
pineapple 20 

任何想法？

Answer 1

這一個班輪應該工作：

awk '$1 in a{a[$1]=sqrt((a[$1]-$2)^2);next}{a[$1]=$2}END{for(x in a)print x, a[x]}' file1 file2 

你的榜樣：

kent$ head file1 file2 
==> file1 <== 
orange 30 
banana 25 
apple 30 
pear 35 

==> file2 <== 
orange 25 
apple 32 
jackfruit 15 
pear 40 
pineapple 20 

kent$ awk '$1 in a{a[$1]=sqrt((a[$1]-$2)^2);next}{a[$1]=$2}END{for(x in a)print x, a[x]}' file1 file2 
orange 5 
jackfruit 15 
apple 2 
pineapple 20 
pear 5 
banana 25 

Answer 2

awk '{ if (a[$1] == "") 
     a[$1] = $2; 
     else 
     { 
     if ((a[$1] - $2) < 0) 
     a[$1] = $2 - a[$1]; 
     else 
     a[$1] = a[$1] - $2; 
     } 
    } END { for (e in a) { print e, a[e] }}' file1.txt file2.txt 

Answer 3

一種方法：

$ awk '{x=a[$1]-$2;a[$1]=(x<0.0)?-x:x}END{for(k in a)print k,a[k]}' file1 file2 
orange 5 
jackfruit 15 
apple 2 
pineapple 20 
pear 5 
banana 25