deb-preinst(5) dpkg suite deb-preinst(5) (NAME) deb-preinst - (SYNOPSIS) DEBIAN/preinst (DESCRIPTION) preinst ( DEBIAN/preinst ) . : new-preinst install . new-preinst install old-version new-version . new-version dpkg 1.18.5 . new-preinst upgrade old-version new-version . new-version dpkg 1.18.5 . old-preinst abort-upgrade new-version postrm . (SEE ALSO) dpkg(1). 1.23.7-dirty 2026-03-06 deb-preinst(5)