ACP Portable A friend indeed.

ACP Portable is a special edition of (currently) 18 ACP applications and one command line ACP utility, packaged so users can swiftly create USB thumbs that work anywhere on anyone's machine 10.4 or greater. Nothing needs to be transferred to a target computer, and nothing is left behind.

This makes it perfect for system administrators and others helping friends out with 'borked' macOS setups and other maladies.