ClearCase: How do I find which version I branched off from?

Question

For a given file, say I branched off from /main/2 and do my development in that branch newBranch. cleartool diff -pred would compare m

Answer 1

Which ClearCase command would I pass either the file name or /main/newBranch and would return /main/2?

You can try using cleartool lsvtree, which will list all versions of a file.

cleartool lsvtree myFile | grep main | head 1

As noted, cleartool describe is easier.

How can I still compare it to where it was branched off from (/main/2)?

You can use the /main/newBranch/0, 0 being the placeholder version created for each new branch, here identical to /main/2, using cleartool diff:

cleartool diff -pred yourFile yourFile@@/main/newBranch/0

Answer 2

For my purposes, cleartool describe -short -pred <version0-of-child-branch> did the trick. For my example, this would be cleartool describe -short -pred /main/newBranch/0.