Check only the new part of a text file?

Hi again. I have another text file that is appended to every night. Is tether an easy way to match against the newly added content?
E.g. The file looks like
Each time lines get added like:
or
When the file changes I would like to check the new portion for "Sync ok".
Can I do this easily with Hazel?
E.g. The file looks like
- Code: Select all
Sync ok.
Compare done.
124534 items transferred.
Connection failed. No Sync.
Compare done.
0 items transferred.
Sync ok.
Compare done.
1245312items transferred.
...
Each time lines get added like:
- Code: Select all
Sync ok.
Compare done.
124534 items transferred.
or
- Code: Select all
Connection failed. No Sync.
Compare done.
0 items transferred.
When the file changes I would like to check the new portion for "Sync ok".
Can I do this easily with Hazel?