Note that there are several variants of the Korn shell. And there are even more shells than that. You can test ksh93 and the MirOS Korn shell on Debian. For

Note that there are several variants of the Korn shell. And there are even more shells than that. You can test ksh93 and the MirOS Korn shell on Debian. For the Heirloom Bourne shell, though, look to FreeBSD, which has everything except the Watanabe shell. * https://svnweb.freebsd.org/ports/head/shells/heirloom-sh/ https://svnweb.freebsd.org/ports/head/shells/heirloom-sh/ * https://svnweb.freebsd.org/ports/head/shells/pdksh/ https://svnweb.freebsd.org/ports/head/shells/pdksh/ * https://svnweb.freebsd.org/ports/head/shells/ksh93/ https://svnweb.freebsd.org/ports/head/shells/ksh93/ * https://svnweb.freebsd.org/ports/head/shells/mksh/ https://svnweb.freebsd.org/ports/head/shells/mksh/ * https://svnweb.freebsd.org/ports/head/shells/oksh/ https://svnweb.freebsd.org/ports/head/shells/oksh/ * https://svnweb.freebsd.org/ports/head/shells/dash/ https://svnweb.freebsd.org/ports/head/shells/dash/ * https://www.freebsd.org/ports/shells.html https://www.freebsd.org/ports/shells.html I appreciate what this sort of thing involves, as you can infer. (-: * https://unix.stackexchange.com/a/434839/5132 https://unix.stackexchange.com/a/434839/5132