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ClearCase: how to generate a patch (unified diff) file from an activity?

Is it possible to generate an patch file from the changeset of a UCM Activity in ClearCase?

I can generate the list of changes this way: cleartool lsactivity -l activity:my_activity_name

Solution

  • The main approach is list all the files within an activity, and use cleartool diff -pred -diff_format in order to generate a diff.

    With the -diff_format option, you would get headers and differences in the same style as the UNIX and Linux diff utility.

    But that would require some scripting, as I mentioned in "Change set predecessor using cleartool".