i am working on a shell script and need help in the comparing part of it. for e.g. there two text files like this:
file1.txt
name1
name2
name3
file1 has to be comared with file2
defaultfile.txt
name1
name2
name3
name4
and during comparision with defaultfile.txt
if file1.txt contains conents of defaultfile, it should echo file authenticated
if file1.txt contains content which is not in defaultfile.txt, and it should echo file not authenticated....
i tried diff command but it doesnt seeem to help me