Seplpkg

: seplpkg --platform all --outdir ./MyPackage repackage LinuxInstaller

If you meant "pkg" in FreeBSD:

It converts a lightweight "stub" installer (downloaded from a Symantec Endpoint Protection Manager or Cloud console) into a full installer that includes all necessary dependencies. seplpkg

Downloads a specific package to create an unmanaged agent installer. rp or repackage : seplpkg --platform all --outdir