I was able to clean up my file as expected but there is one piece I am having trouble with. I want to capture a header in the file and include it into each line copied, (BAR.COMP) and when it gets to the next header if the name changes I want it to include the new header to the next copied lines. This is what I have so far but just confused on how to incorporate the second peice. Any help would be great! Thanks!

use strict;
use warnings;

    open (NEW, ">", "output.txt" ) or die "could not open:$!";

    open (FILE, "<", "Report.txt") or die "could not open:$!";

        while (<FILE>) {
            print NEW if /^\h{3}\d/;
}
close (FILE);
close (NEW);
[download]

Report.txt

 
                                                          BAR.COMP1
DATE: 12/14/15
G2,,,,,,,USER LOGS
DEVICE          EMULATOR   FROM-THRU    MINS  ROUTINE
G1,,,,,,,USER LOGS
COMPUTER04.1                 0726 0808    42    Process Account

              Account Name  Master Patient Number   Account Number
   0727       JOHN DOE      1234567899              1234567899   
   0730       JOHN DOE      1234567899              1234567897 
   0732       JOHN DOE      1234567899              1234567899   
   0742       JOHN DOE      1234567899              1234567893  
   0744       JOHN DOE      1234567899              1234567893

                                                          BAR.COMP2
DATE: 12/14/15
G2,,,,,,,USER LOGS
DEVICE          EMULATOR   FROM-THRU    MINS  ROUTINE
G1,,,,,,,USER LOGS
COMPUTER04.1                 0726 0808    42    Process Account

              Account Name  Master Patient Number   Account Number
   0727       JOHN DOE      1234567899              1234567899   
   0730       JOHN DOE      1234567899              1234567897 
   0732       JOHN DOE      1234567899              1234567899   
   0742       JOHN DOE      1234567899              1234567893  
   0744       JOHN DOE      1234567899              1234567893
[download]

output.txt

BAR.COMP1   0727       JOHN DOE      1234567899         1234567899   
BAR.COMP1   0730       JOHN DOE      1234567899         1234567897 
BAR.COMP1   0732       JOHN DOE      1234567899         1234567899   
BAR.COMP1   0742       JOHN DOE      1234567899         1234567893  
BAR.COMP1   0744       JOHN DOE      1234567899         1234567893
BAR.COMP2   0727       JOHN DOE      1234567899         1234567899   
BAR.COMP2   0730       JOHN DOE      1234567899         1234567897 
BAR.COMP2   0732       JOHN DOE      1234567899         1234567899   
BAR.COMP2   0742       JOHN DOE      1234567899         1234567893  
BAR.COMP2   0744       JOHN DOE      1234567899         1234567893
[download]