Parsing server log files

Hi,

Does anyone have suggestions or hints on parsing server log files for specific entries? This needs to be done because some of SoapUI scripts when executed cause the system under test to generate an entry in a log file (system log files on Linux server). The high-level steps are;

          Login to the server, is this possible from Groovy or some other option?

          Navigate to the directory where the file is located

          Open file

          Search file for specific entries based on test executed, new entries are added at the end of the file.

Any help or suggestions are appreciated.

Thanks

Dan