Move sh to its own directory.

Makefile

@@ -16,6 +16,7 @@ games \
 mbr \
 mkinitrd \
 regress \
+sh \
 tix \
 utils \
 kernel

doc/user-guide

@@ -182,7 +182,7 @@ Sortix comes with a number of home-made programs. Here is an overview:
 * `regress` - run system tests
 * `rm` - remove file
 * `rmdir` - remove empty directory
-* `sh` - alias for the shell
+* `sh` - command shell
 * `sleep` - delay for a specified amount of time
 * `sort` - sort lines of text files
 * `tail` - display end of file
@@ -494,6 +494,12 @@ driver program.
 
 This program converts a binary file to an C array.
 
+### sh ###
+
+This is the Sortix shell. Currently the `sh` program is a wrapper that looks for
+a better non-interactive shell if running a script, otherwise it invokes the
+hacky `sortix-sh` program.
+
 ### Sortix Kernel ###
 
 The Sortix kernel is the core of the Sortix operating system. It provides all

sh/.gitignore

@@ -0,0 +1,2 @@
+sh
+sortix-sh

sh/Makefile

@@ -0,0 +1,30 @@
+SOFTWARE_MEANT_FOR_SORTIX=1
+include ../build-aux/platform.mak
+include ../build-aux/compiler.mak
+include ../build-aux/version.mak
+include ../build-aux/dirs.mak
+
+OPTLEVEL?=$(DEFAULT_OPTLEVEL)
+CXXFLAGS?=$(OPTLEVEL)
+
+CPPFLAGS:=$(CPPFLAGS) -DVERSIONSTR=\"$(VERSION)\"
+CXXFLAGS:=$(CXXFLAGS) -Wall -Wextra -fno-exceptions -fno-rtti
+
+BINARIES:=sh sortix-sh
+
+all: $(BINARIES)
+
+.PHONY: all install clean
+
+install: all
+	mkdir -p $(DESTDIR)$(BINDIR)
+	install $(BINARIES) $(DESTDIR)$(BINDIR)
+
+sortix-sh: sh.cpp
+	$(CXX) -std=gnu++11 $(CPPFLAGS) $(CXXFLAGS) $< -o $@
+
+sh: proper-sh.cpp
+	$(CXX) -std=gnu++11 $(CPPFLAGS) $(CXXFLAGS) $< -o $@
+
+clean:
+	rm -f $(BINARIES) *.o

sh/proper-sh.cpp

@@ -15,7 +15,7 @@
     You should have received a copy of the GNU General Public License along with
     this program. If not, see <http://www.gnu.org/licenses/>.
 
-    sh.cpp
+    proper-sh.cpp
     Forward execution to the best shell.
 
 *******************************************************************************/

sh/sh.cpp

@@ -15,7 +15,7 @@
     You should have received a copy of the GNU General Public License along with
     this program. If not, see <http://www.gnu.org/licenses/>.
 
-    sortix-sh.cpp
+    sh.cpp
     A hacky Sortix shell.
 
 *******************************************************************************/

utils/.gitignore

@@ -32,10 +32,8 @@ pager
 pwd
 rm
 rmdir
-sh
 sleep
 sort
-sortix-sh
 tail
 time
 tr

utils/Makefile

@@ -44,10 +44,8 @@ pager \
 pwd \
 rm \
 rmdir \
-sh \
 sleep \
 sort \
-sortix-sh \
 tail \
 time \
 tr \