I'm working with TPM2 tools on CentOS 7 and CentOS 8, and it seems like the command line interface between the versions of tools has changed. So my 8 commands don't work on 7, and I have to write new ones. For example, while the hierarchy defaults to owner on 8's tools, it seems like it has to be explicitly specified on 7's tools.
Is there some simple way to deal with this that I don't know about? Like a flag to make the newer tools revert to the older tools command line interface?
Just thought I should ask before I go down the rabbit hole of figuring out when these changes happened (hopefully in a single version) and then writing dozens of shell wrapper functions to handle the differences.
Is there some simple way to deal with this that I don't know about? Like a flag to make the newer tools revert to the older tools command line interface?
No.
before I go down the rabbit hole of figuring out when these changes happened
There should be no need. The tpm2-tools follow Semantic Versioning. Therefore, breaking changes should only happen when the major version is increased (e.g. from 4.X to 5.0).
To find more information about the changes, see the tpm2-tools Changelog.
Also, see the man pages on GitHub (e.g. for tpm2_getrandom). Here, you also get access to the history of the man pages.