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Hey Pamu, great script using awk!!! It worked very well!!! Could you consider to help me one more time?
After to run your script I had a file that I would like to split it since the second column of...

Hi Pamu, thanks for your script. I'm very happy with the results.
I just have a problem that I would like to have your help, because I'm a newbie in these things.
My imput is:

imput
scaffold_0 ...

Dear all,
I have a imput file like this
imput
scaffold_0 10558458 10558459 1.8
scaffold_0 10558464 10558465 1.75
scaffold_0 10558467 10558468 ...

Dear all,
I have the files: xaa xab xac
and I try to paste them using $paste -d, xaa xab xac
I see:

output
3e-130
,6e-78
,5e-74
6e-124
,0,007
,0,026
2e-119

When I type: $ paste -d,...

Hi elixir_sinari,
thank you very much for your smart script. It is very useful and quick (each file has 1 millions of lines).

Best regards.

I have two files like this:
fileA.net
A
B
C

fileA.dat
1
2
3

and I want the output

output_expected
A 1
B 2
C 3

I know that the easier way is to do a paste fileA.net fileA.dat,...

Thanks Cabrao, however, I have thousand of couple of files to be joined and to do a paste for all of them is not so feasible. The that I wrote is into a loop for.

Dear all,
I have two files like this

file1
A B
C D
E F

file2
1,2
3,4
5,6

I want this output
output_expected

A B 1,2
C D 3,4
E F 5,6

Hi all,
I'm trying to select lines of a file and at the end do not have redundant itens:

Input
A_B
K_A
C_T
A_O
U_B
P_C
D_F
Z_G
W_U

Output
A_B
C_T
D_F
Z_G
W_U

Thanks Robin, It is nice to have smart guys like you in computer.
I'm a newbie in programming, in fact I'm a biologist that is entering in bioinformatics.
So I have two question,
when I insert...

Dear all,
I have a file like this:
imput
scaffold_0 1
scaffold_0 10000
scaffold_0 20000
scaffold_0 25000
scaffold_1 1
scaffold_1 10000
scaffold_1 20000
scaffold_1 23283

and I want the...

Hi fellas,
I have two files such as:
File 1
interacao,AspAsp,AspCys,CysAsp,CysCys,classe

File 2
interacao,AspAsp,CysAsp,AspCys,CysCys,classe
beta_alfa, DA, CA, DD, ...

Thanks bartus11. It worked fine. (https://www.unix.com/members/302059620.html)

Hi fellas,
I have a file like this:
A_B
B_D
C_D
D_B
E_F
G_H
B_A
F_E

In other words, I have member1_member2 and member2_member1 in the same file. In the exemple aforementioned I have A_B...

Thanks for the information vbe.
I'm using a computer with a quad core processor, 12 GB of RAM and MAC OSX of OS.
The real file has 4 GB and 40,000,000 of columns.

Is it enough to help me?
...

Dear all,
I'm a newbie in programming and I would like to know if it is possible to parallelize the script:
for l in {1..1000}
do
cut -f$l quase2 |tr "\n" "," |sed 's/$/\
/g' |sed '/^$/d'...

Thanks. It works as I wanted.

Dear all,
I would like to combine all lines of a file with all lines of another file:
The input are
file 1
A
B
C
D

file 2
A
B
C
D

The output is
final file
A_A
A_B
A_C