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XMM-Newton Science Analysis System


playback (playback-1.4) [xmmsas_20080701_1801-8.0.0]

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Description

When a SAS task manipulates a data set with write privileges, its action is recorded in three different manners. They are:

• process information: this logs the SAS task name, its command line, version, and SAS release.

• history information: this records the name of the SAS task and the date when the task was applied to the data set.

• dal trace: these log the internal state of the dal when a task was executed.

playback can be used to extract this information from a list of data sets (parameter sets). Optionally, the output can be redirected to a script file, that can subsequently be executed to actually play back the sequence of SAS tasks that were used to create and modify a data set (see 3.1).

By default playback only displays the content of the process information. Optionally, the information in the history information and the dal trace can also be shown. (Parameters showhistory and showdaltrace respectively.)