Merge Two text files line by line using batch script

Question

I have 2 text files; A.txt and B.txt and I want to merge them to make C.txt using a batch script.

However (here's the tricky part) I wish to do it so each line from A.txt is appended with a space then the first line from B.txt then a new line with the first line from A and the second from B and so on until the end of B is reached and then we start with the second line of A.

I know I haven't worded this well so here's an example:

A.txt;

B.txt;

Z
Y
X
W
V
T
R

So C.txt would have;

1 Z
1 Y
1 X
1 W
1 V
1 T
1 R
2 Z
2 Y

etc.

Simon MᶜKenzie · Accepted Answer · 2013-06-14 01:12:11Z

7

@echo off
for /f "delims=" %%a in (a.txt) do (
    for /f "delims=" %%b in (b.txt) do (
        >>c.txt echo %%a %%b
    )
)

edited Jun 14, 2013 at 1:12

Simon MᶜKenzie

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answered Jun 14, 2013 at 0:51

foxidrive

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3 Comments

Aacini Over a year ago

+1 It is funny that what the OP calls "the tricky part" is precisely the requirement that makes this solution so simple! ;-)

user2483876 Over a year ago

Thanks - works perfectly! This was so much simpler than I thought it would be! I'm obviously out of touch :/

Rakha Over a year ago

foxidrive, this is a nice loop, what if one would like, with the same files given as example: 1 a 2 b 3 c ... instead of what it is now: 1 a 1 b 1 c 1 d 1 e 2 a 2 b 2 c

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