suppose I have two files which contains following parameter

(1) file1: test1

LOG_OUT:YES

(2) file 2: test2

LOG_OUT:NO
TIME:40

Now I want to find the diff and merged into file 2 i.e. test2 so that file test2 contains the following parameter

test2

LOG_OUT:YES
TIME:40

Can any one have any idea how do I achieve this ?? any command for mergring and achieving above

I m using RHEL 4.7


Regards,
Amit P

That seems a little disconnected.

If all you want to do is change entry in second file to "YES" from "NO" sed would be a good way to go. There is no commonality between file1 and file 2 on which to determine what to change the entry to. Does each file in fact only contain one record as in your example? If not then that lack of commonality means there's no automated way to do what you want.

If each file only has one record then you could do it by doing something testing the value of both files for the answer to LOG_OUT: and use that as the basis for what you do:

The first line gets the value following LOG_OUT: from file1.
The second line substitutes that value from file1 in file2 regardless of whether current values is YES or NO in file2. (You could refine the script by actually testing for the current value and only substituting if it were different but the above is a quick and dirty way that would work.)

hmm i dont know specific syntax but you would more then likely be looking for something along the lines of grep sed and/or awk , more then likely piping a few together (with a |) then redirecting the output into a third file with a >
use man grep, sed or awk to find out about the commands
sorry if i wasnt too helpful

other commands like wc (word count) might help as well