Shell Programming and Scripting

There are two files file1.txt and file2.txt
and the contents of files are given as follows:
file1.txt
{
EnterpriseServices
GlobalUserManagement
USAccountSummary
USEStatement
MYCAServices
EnterpriseServices
MYCAServices
USEStatement
}
file2.txt
{
USEStatement
MYCAServices
EnterpriseServices
MYCAServices
USEStatement
DocGen
OnlineDisputes
Transfer
INTLEStatement
}
Now the problem is how to compare these two files and redirect to an output file the contents which are present in file1.txt but which are not present in file2.txt

Please help in this regard.

You can use comm -13 or comm -23. Just play with it a little

I am not sure how exactly i can use comm -13 or comm -23 because i need to write some generic script to compare two files and redirect the output to a third file with the contents which are present in first file but not present in second file.

Hi all,
i tried comm command in all the possible ways but could not get the expected result.
I will explain one more time.i have two files containing some words ,it is not necessary that the worrds are in same order in both the files but same words will be there.i want to compare those files and redirect the result to a third file which will contain all the words which are present in first file but not in second.

comm command is not solving the purpose as it compares line by line even if a same word is present in 1st line of file one and 4th line of file two then it is giving the output.

The result should be like : if same words are present in both the files no matter on which line number they are then the final output should be zero.

Please help.
Thanks

Something like this???

grep -v -f file2 file1

The problem in the solution you have given is there is no -f option with grep command?
Could anyone help me out??

Can anyone tell how to use a loop inside awk command so that the words of second file are compared with all the words of first file and those that are present in first file but not in second are given as output??
Thanks in advance

Try this it should work as long as you have saved file1.txt & file2.txt seprately

Code:

diff file1.txt file2.txt | grep ">" | sed 's/>//g'