XMM-Newton SAS Home Page
XMM-Newton Science Analysis System

dal (dal-1.198) [xmmsas_20211130_0941-20.0.0]


By default when the dal is used to create a new dataset, an existing dataset with the same name will be overwritten. This is referred to as clobbering.

If the environment variable SAS_CLOBBER is defined, to determines the clobber behaviour. It can take the following values:

0 no clobber: a task will produce an error when trying to overwrite an existing file.
1 clobber: a task will overwrite existing files. This is the default behaviour, in the event that the SAS_CLOBBER variable is undefined.

XMM-Newton SOC -- 2021-11-30