in reply to Text File Manipulation

... replace the first entry in file1.txt(JO EMS Math) with my row in file2.txt (Jon EMS Physics) without changing the row format like padding and spacing.

I don't understand what "padding" means in the context of your question. (In general, I don't understand the context of your question.) I don't understand how "spacing" can be expected to remain the same when two of the three replacement fields have different widths.

I stored and worked on @ ...

I don't understand what @ is.

... and was able to do the replacement however the padding and spacing changed.

Can you please show a Short, Self-Contained, Correct Example of what you have done so far? It might do much to clear up my misunderstandings.

Also: Is this a school assignment? It sure looks like one. If it is, please tell us and we will be better able to offer appropriate help.


Give a man a fish:  <%-{-{-{-<