Splitting commands/cd/cd.sh

As the situation is right now, importing one of the commands the
script replaces, requires a doc/UPDATING step.

By moving the script to a shared folder, and symlinking it once per
command, this allows for separatly installed files on the system,
instead of one file being symlinked multiple times.

Change-Id: I0dae96982bca5168b852ed70fff61442441b929f

commands/Makefile

@@ -34,7 +34,9 @@ SUBDIR=	add_route arp ash at backup btrace \
 	worldstone updateboot update_bootcfg \
 	atnormalize dosread fdisk loadfont \
 	autopart part partition playwave  \
-	recwave repartition screendump
+	recwave repartition screendump \
+	command echo expr false getopts read test true \
+       	umask wait
 
 .if ${MACHINE_ARCH} == "earm"
 SUBDIR+=	eepromread

commands/cd/Makefile

@@ -2,17 +2,4 @@ SCRIPTS= cd.sh
 BINDIR=	/bin
 MAN=
 
-LINKS+=	${BINDIR}/cd ${BINDIR}/[
-LINKS+=	${BINDIR}/cd ${BINDIR}/command
-LINKS+=	${BINDIR}/cd ${BINDIR}/echo
-LINKS+=	${BINDIR}/cd ${BINDIR}/expr
-LINKS+=	${BINDIR}/cd ${BINDIR}/false
-LINKS+=	${BINDIR}/cd ${BINDIR}/getopts
-LINKS+=	${BINDIR}/cd ${BINDIR}/read
-LINKS+=	${BINDIR}/cd ${BINDIR}/test
-LINKS+=	${BINDIR}/cd ${BINDIR}/true
-LINKS+=	${BINDIR}/cd ${BINDIR}/umask
-LINKS+=	${BINDIR}/cd ${BINDIR}/wait
-
-
 .include <bsd.prog.mk>

commands/cd/cd.sh

@@ -1,11 +0,0 @@
-#!/bin/sh
-#
-# cd 1.3 - equivalents for normally builtin commands.	Author: Kees J. Bot
-
-case $0 in
-*/*)	command="`expr "$0" : '.*/\(.*\)'`"
-	;;
-*)	command="$0"
-esac
-
-"$command" "$@"

commands/cd/cd.sh

@@ -0,0 +1 @@
+../shared/builtin.sh

commands/command/Makefile

@@ -0,0 +1,5 @@
+SCRIPTS= command.sh
+BINDIR=	/bin
+MAN=
+
+.include <bsd.prog.mk>

commands/command/command.sh

@@ -0,0 +1 @@
+../shared/builtin.sh

commands/echo/Makefile

@@ -0,0 +1,5 @@
+SCRIPTS= echo.sh
+BINDIR=	/bin
+MAN=
+
+.include <bsd.prog.mk>

commands/echo/echo.sh

@@ -0,0 +1 @@
+../shared/builtin.sh

commands/expr/Makefile

@@ -0,0 +1,5 @@
+SCRIPTS= expr.sh
+BINDIR=	/bin
+MAN=
+
+.include <bsd.prog.mk>

commands/expr/expr.sh

@@ -0,0 +1 @@
+../shared/builtin.sh

commands/false/Makefile

@@ -0,0 +1,5 @@
+SCRIPTS= false.sh
+BINDIR=	/bin
+MAN=
+
+.include <bsd.prog.mk>

commands/false/false.sh

@@ -0,0 +1 @@
+../shared/builtin.sh

commands/getopts/Makefile

@@ -0,0 +1,5 @@
+SCRIPTS= getopts.sh
+BINDIR=	/bin
+MAN=
+
+.include <bsd.prog.mk>

commands/getopts/getopts.sh

@@ -0,0 +1 @@
+../shared/builtin.sh

commands/read/Makefile

@@ -0,0 +1,5 @@
+SCRIPTS= read.sh
+BINDIR=	/bin
+MAN=
+
+.include <bsd.prog.mk>

commands/read/read.sh

@@ -0,0 +1 @@
+../shared/builtin.sh

commands/shared/README

@@ -0,0 +1,22 @@
+builtin.sh is installed as a set of tools to stand in for specific
+filesystem call to builtin commands.
+
+for example if /bin/test is used, then builtin.sh will be loaded
+and simply call the builtin function of the same name.
+
+At this moment it is installed as the following commands:
+/bin/[
+/bin/command
+/bin/echo
+/bin/expr
+/bin/false
+/bin/getopts
+/bin/read
+/bin/test
+/bin/true
+/bin/umask
+/bin/wait
+
+If one of the following is replaced by the NetBSD equivalent, please
+update the list, and remove this completly when it is not anymore
+required.

commands/shared/builtin.sh

@@ -0,0 +1,11 @@
+#!/bin/sh
+#
+# cd 1.3 - equivalents for normally builtin commands.	Author: Kees J. Bot
+
+case $0 in
+*/*)	command="`expr "$0" : '.*/\(.*\)'`"
+	;;
+*)	command="$0"
+esac
+
+"$command" "$@"

commands/test/Makefile

@@ -0,0 +1,5 @@
+SCRIPTS= test.sh
+BINDIR=	/bin
+MAN=
+
+.include <bsd.prog.mk>

commands/test/test.sh

@@ -0,0 +1 @@
+../shared/builtin.sh

commands/true/Makefile

@@ -0,0 +1,5 @@
+SCRIPTS= true.sh
+BINDIR=	/bin
+MAN=
+
+.include <bsd.prog.mk>

commands/true/true.sh

@@ -0,0 +1 @@
+../shared/builtin.sh

commands/umask/Makefile

@@ -0,0 +1,5 @@
+SCRIPTS= umask.sh
+BINDIR=	/bin
+MAN=
+
+.include <bsd.prog.mk>

commands/umask/umask.sh

@@ -0,0 +1 @@
+../shared/builtin.sh

commands/wait/Makefile

@@ -0,0 +1,5 @@
+SCRIPTS= wait.sh
+BINDIR=	/bin
+MAN=
+
+.include <bsd.prog.mk>

commands/wait/wait.sh

@@ -0,0 +1 @@
+../shared/builtin.sh