condor_preen man page

condor_preen remove extraneous files from HTCondor directories


condor_preen [ -mail ] [ -remove ] [ -verbose ] [ -debug ]


condor_preen examines the directories belonging to HTCondor, and removes extraneous files and directories which may be left over from HTCondor processes which terminated abnormally either due to internal errors or a system crash. The directories checked are the  LOG ,  EXECUTE , and  SPOOL directories as defined in the HTCondor configuration files. condor_preen is intended to be run as user  root or user  condor periodically as a backup method to ensure reasonable file system cleanliness in the face of errors. This is done automatically by default by the condor_master daemon. It may also be explicitly invoked on an as needed basis.

When condor_preen cleans the  SPOOL directory, it always leaves behind the files specified in the configuration variables  VALID_SPOOL_FILES and  SYSTEM_VALID_SPOOL_FILES , as given by the configuration. For the  LOG directory, the only files removed or reported are those listed within the configuration variable  INVALID_LOG_FILES list. The reason for this difference is that, in general, the files in the  LOG directory ought to be left alone, with few exceptions. An example of exceptions are core files. As there are new log files introduced regularly, it is less effort to specify those that ought to be removed than those that are not to be removed.


Send mail to the user defined in the  PREEN_ADMIN configuration variable, instead of writing to the standard output.
Remove the offending files and directories rather than reporting on them.
List all files found in the Condor directories, even those which are not considered extraneous.
Print extra debugging information as the command executes.

Exit Status

condor_preen will exit with a status value of 0 (zero) upon success, and it will exit with the value 1 (one) upon failure.


Center for High Throughput Computing, University of Wisconsin-Madison