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Batch Environment Variables

See this article in context within the following user guides: Eos | Titan

PBS sets multiple environment variables at submission time. The following PBS variables are useful within batch scripts:

Variable Description
$PBS_O_WORKDIR The directory from which the batch job was submitted. By default, a new job starts in your home directory. You can get back to the directory of job submission with cd $PBS_O_WORKDIR. Note that this is not necessarily the same directory in which the batch script resides.
$PBS_JOBID The job’s full identifier. A common use for PBS_JOBID is to append the job’s ID to the standard output and error files.
$PBS_NUM_NODES The number of nodes requested.
$PBS_JOBNAME The job name supplied by the user.
$PBS_NODEFILE The name of the file containing the list of nodes assigned to the job. Used sometimes on non-Cray clusters.