There will not be one file , there will be directories like *JOBLG. In these directories are stored the job log file.
File don't have the name of the jobs. The name of the files are in alphanumeric format. You can not read these files from OS level.
One file will be created for one finished job. There is no such file as as summary file.
Please go ahead and check some sap notes. Start with 48400, 20176 and 10551.
Thanks
Amit
Message was edited by: Amit Bangotra