i need help with awk to replace non-zero number with 0

[mnnarendra]

This is the input file pwpem_b.ovr -

W25_2009295 1 46151.91
W26_2009594 1 24758.78
W26_2009595 1 46421.62


The non-numeric values starting position 50, length of 8 need to be replaced with 0 and followed by spaces as shown below. This should be the output file pwpem_a.ovr.

W25_2009295 1 0
W26_2009594 1 0
W26_2009595 1 0

 

[Annihilannic]

awk '{print substr($0,1,48) "0       "}' inputfile > outputfile

Annihilannic.

 

[mnnarendra]

Works great. I need the awk script to handle file with zero byte as well.

Thank you.

 

[Annihilannic]

I need the awk script to handle file with zero byte as well.

What do you mean? Does that solution not work for 0 byte files?

Annihilannic.

 

[Annihilannic]

I understand, I've seen your other post in the Unix Scripting forum now.

Annihilannic.