You just need to make sure the app structure is all there (include default folder with app.conf, metadata with default.meta and whatever other .conf files you want to include) a then just make a tar of the whole thing. The .spl file is just a .tar with a renamed extension. Check this section of the link effem2 shared regarding 3rd party utilities: https://dev.splunk.com/enterprise/docs/releaseapps/packageapps/#Third-party-utilities-and-CLI-commands Other option is, If you have it your all in a github repo, you can use GitHub actions to do that for you. Check one of my repos: https://github.com/diogofgm/TA-aruba_networks I have some workflows for GitHub actions there that packs the app as a tar.gz, runs splunk app inspect on it and uploads it to GitHub as a action result that you can then download and install it into splunk.
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