逐行比较来自两个不同文本文件的两个值

Question

i have two text files i want to compare the data between the two text files line by line and i have to maintain the matched values in to one file and unmatched values in to another file. i am giving the examples

a.txt
10
20
30

the values in the a.txt are appending horizontally.

b.txt
10
30
20

the values in the b.txt are appending vertically

can u help me to write a shell script for comparing the above two text files line by line.if the line is matched i have to send the output to the one line else it has to send the out put to the another file.

i/o is 10 only.(line with possition comparission).

Answer 1

Maybe try:

paste a.txt b.txt | sed -n '/\([0-9]\+\)[[:space:]]\+\1/p' > c.txt

c.txt will contain:

10 10

And

paste a.txt b.txt | sed '/\([0-9]\+\)[[:space:]]\+\1/d' > d.txt

d.txt will contain:

20 30
30 20