How to merge two files line by line?

darkbeanies · 2011-08-23 17:22:14

Hello, normally I use this:

awk 'NR==FNR{a[FNR]=$0;next} {print a[FNR],$0}' file1 file2 > file3

so if i joined a file containing:

aaa
bbb
ccc

and another file containing:

ddd
eee
fff

I get:

aaa ddd
bbb eee
ccc fff

But right now I need to get:

aaaddd
bbbeee
cccfff

Pray help me, I have been writing my crappy script for about 10 hours now and it still doesn't do what i want...

Last edited by darkbeanies (2011-08-23 17:22:38)

carlocci · 2011-08-23 17:34:41

paste --delimiters="" a.txt b.txt

or you can remove the comma from your awk print statement

Last edited by carlocci (2011-08-23 17:39:57)

darkbeanies · 2011-08-23 17:39:59

Looking good! Many many thanks!

I really should learn awk i think...

Last edited by darkbeanies (2011-08-23 17:40:59)

falconindy · 2011-08-23 17:43:54

If you wanted to do it with awk, your solution works, just get rid of the comma in the print statement:

awk 'NR==FNR{a[FNR]=$0;next} {print a[FNR] $0}' file1 file2
aaabbb
aaabbb
aaabbb

bah... carlocci beat me to it.

Last edited by falconindy (2011-08-23 17:44:07)

darkbeanies · 2011-08-23 19:15:10

falconindy wrote:

bah... carlocci beat me to it.

I can give you some more jolly puzzles later if you'd like...

harryNID · 2011-08-23 22:03:28

Another meaningless way:

join <(nl file_a) <(nl file_b) | mawk '{print $2$3}'

prints

aaaddd
bbbeee
cccfff

or

join <(nl file_a) <(nl file_b) | mawk '{print $2,$3}'

prints

aaa ddd
bbb eee
ccc fff

Using "nl" to make each line common so as to join them.

darkbeanies · 2011-08-23 22:54:43

Sage advice from Holmes as usual.

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