Shell Programming and Scripting

I am attempting to use awk to validate the length of each line in a fixed-width raw data file prior to reading in the data. I am happy with....

{if (length() == 403)
print > "valid.file";
else
print > " invalid.file"
}

...to separate out the valid length lines from invalid length lines.

However, I need to extend this to add the line number as read from the original file onto the start of each line before writing out. There are potentially tens of millions of records in a file, so lets say the line number occupies the first 8 characters of a line, making the total length (of valid lines) 411.

Any help greatly appreciated,

Thanks,

Steve

Code:

{
if (length() == 403)
   printf("%08d%s\n", FNR, $0) > "valid.file";
else 
   printf("%08d%s\n", FNR, $0) > " invalid.file"
}

Jean-Pierre.

Code:

{
   if (length() == 403)
     print FNR, $0 > "valid.file";
   else
     print FNR, $0> " invalid.file"
}

Like it.

Thanks a lot.

Steve