Question

I have file.txt 3 columns.

1 A B
2 C D
3 E F

I want to add #1&#3 as the end of #2. Result should look like this:

1A
2C
3E
1B
2D
3F

I am doing this by

cut -f 1,2 > tmp1
cut -f 1,3 > tmp2
cat *tmp * > final_file

But I am getting repeated lines! If I check the final output with:

cat * | sort | uniq -d

there are plenty of repeated lines and there are none in the primary file.

Can anyone suggest other way of doing this? I believe the one I am trying to use is too complex and that’s why I am getting such a weird output.

Answer 1

pzanoni@vicky:/tmp$ cat file.txt 
1 A B
2 C D
3 E F
pzanoni@vicky:/tmp$ cut -d' ' -f1,2 file.txt > result
pzanoni@vicky:/tmp$ cut -d' ' -f1,3 file.txt >> result
pzanoni@vicky:/tmp$ cat result 
1 A
2 C
3 E
1 B
2 D
3 F

I’m using bash