3)  "cat" all 10, then count lines using wc.
                                               --> cat ??.txt | wc -l
41025
                                             that’s 41,025 lines of information.
4)  add more filters to see how many possible Messages there could be:
                                      -> cat ??.txt | grep Maint | grep - | wc -l
5640
                          That’s 5,640 messages included in that batch of 10 reports.
5) Now we needed to find out which were common across all 10 reports and work those.
6) Technical content for each of the reported errors ranged from 14 to about 23 lines long,
using "grep" with the -A for "after" the pattern, we could create a report that gave most of the details.

Initially the engineer did the steps manually.  A script has been written to automate the steps.        What took 13 hours per test run in EXCEL now takes less than 5 seconds in a Linux shell..
                                           From 13 hours... to less than 5 seconds.

Next, find one error message in these 10 reports.   The information is obsfucated for security.                   grep to find the pattern 21-18891 and to display 23 lines after that.

 The goal of course was to eliminate all errors, but initially they focused on the common ones first.