Hi monks,

I have a file that contains a bunch of records which have a fixed length. The first record of the file contains some control information which is nice for me when I process the file but it needs to be removed after I'm done with it.

I'm trying to find an efficient way to remove the first record.

The solution I came up with would be to read each record at a time and print it to a new file while ignoring the first line. 

$i = 0;
until ( eof (recordfile) )
{
 read (recordfile, $record, $record_length)
 if (i > 0)
 {
  print newrecordfile ($record);
 }
 i++;
}

[download]

These files can be huge, possibly 500+ MB and it seems like a waste to reprint and read the entire file just to remove the first line.

Is there a more efficient way to do this?

In reply to Removing the first record in a file containing fixed records by sparkle

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