Command record and playback features

IDF provides a command level record and playback facility. IDF records commands to a command log. These commands can then be replayed. They can all be replayed at the start of a debugging session, or else they can be recalled one by one, and then executed, modified and executed, or skipped.

To record a debugging session on the command level, specify or set the CMDLOG option.

The location of the command log is:

On CMS, the file "ASM CMDLOG fm", where fm is specified by the MODE option (and defaults to file mode A1).
On z/OS the data set defined by the CMDLOG DD name.
On z/VSE, the data set defined by the CMDLOGO DLBL name.

Turn logging off with the SET OPTION CMDLOG command.

You can specify command arguments with the cursor position, and you can overtype data on the screen. IDF logs all operations in a way that lets you repeat them later with some modification to the file.

To play back all or part of a session recorded at command level, use the RLOG command, or specify the RLOG option at invocation.