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Yes Corona688. You are correct int truncate. This is the reason I get 0 ,1 .. so on.. But I have one more doubt, how does awk know that it has to print the first 34 lines to first set of file and so...

Yeah.
awk '{filename = "sample_file" int((NR-1)/34) ".DAT"; print >> filename}' sample_file.DAT

In that code, so this is how I understand,
first iteration , it reads till 34th line 34-1/34 and...

Hi RudiC,
Got it.so NR is nothing but the no of lines read by the awk and the for loop printed me 1 till 69.

Hello Everyone,

I am new to awk and trying my hand with the diff codes and came across the below code today. It would be great if any of the Guru's help me to understand.

awk '{filename =...

Hi Rudi/Pravin,

Sorry the length was wrong in the first file and the I did try with the modified length and it worked fine.. Thank you so much.

Hi Rudic,
I have tried the command but the length of the file is modified everytime I run the command. For ex

ASDSD ADSD 0000001 X
AAASD ADSD 0000001 X
SDDDD ADSD 0000001 X
...

Sorry about that RudiC. Those are not decimal values in the file and I did not provide no of positions and it should have been 7 digits. The sample value more precisely

ASDSD ADSD 0000000 X...

Hi Everyone,

I need to increment a value in the fixed length file. The file has almost a million rows. Is there any easy way to accomplish this.

Ex
input file
ASDSD ADSD 00000 X
AAASD ADSD...

:-) Great.. That really helped me a lot. Both the solutions are working fine.. Thank you so much Junior helper and Dodmis..

Thanks for your quick reply Corona688. But my file length is almost 250 chars and could not copy it in single line. Is there a way can I parameterize the line to feed into yes command.

Hi All,
I would like to create a 1 million duplicate records from a single fixed length row. Is there a simple way to create this quickly in unix. I am using korn shell on the AIX OS.

For ex,
...