A newbie here, so please excuse my ignorance.....

I have a Master_file.txt whose contents will change every week.....basically gives a difference of the contents of a baseline.....on a weekly basis.....

Master_File.txt -> Week1
------------------------

A3 A1
D8 D6
T4 T3
.
.
.


Next week the file might look like this.....

Master_File.txt -> Week2
------------------------

A5 A3
B6 B5
N5 N4
T5 T4
.
.
.


I execute a customised diff script for each of the difference found in this Master_File.txt every week.

So for Week1; I would execute

A3 diff A1 > A_Result.txt
D8 diff D6 > D_Result.txt
....

for Week2; I would execute

A5 diff A3 > A_Result.txt
B6 diff B5 > B_Result.txt
....

Now my question, I need a script which will pick up whatever is in the Master_file.txt as input every week in spite of the obvious changes(sometimes it could be only a version change, sometimes there could be a new object) and then execute my customized diff script against each of the listed objects.

Would anyone know how to achieve this?

Any help appreciated......

Thanks