oksh-noxz [fork] Portable OpenBSD ksh, based on the Public Domain Korn Shell (pdksh).
	git clone https://noxz.tech/git/oksh-noxz.git
	oksh-noxz

commit: 9310d68366c711386e8ae64e10a2bf83f6aae7c0
parent: d0301f9572a4739b12e551938752ea1195aebb69
author: Brian Callahan <dodonpachi-github@mailinator.com>
date:   Sun, 17 Sep 2017 17:41:19 -0400

Fix UPDATE routine.

diff --git a/GNUmakefile b/GNUmakefile
@@ -50,7 +50,7 @@ endif
 #
 ifneq ($(UNAME_S),Darwin)
 UPDATE := `grep -w ${PREFIX}/bin/${PROG} /etc/shells > /dev/null;\
-	[ $$? -ne 0] && echo "${PREFIX}/bin/${PROG}" >> /etc/shells`
+	[ $$? -ne 0 ] && echo "${PREFIX}/bin/${PROG}" >> /etc/shells`
 endif
 
 ifneq ($(UNAME_S),Darwin)