diff --git a/Makefile b/Makefile
index 0bae170..bd2e5b1 100644
--- a/Makefile
+++ b/Makefile
@@ -210,19 +210,18 @@ getconf.o: getconf.h
 getconf.h:
 	scripts/getconf.sh > $@
 
-install: all
-	mkdir -p $(DESTDIR)$(PREFIX)/bin
-	cp -f $(BIN) $(DESTDIR)$(PREFIX)/bin
-	cd $(DESTDIR)$(PREFIX)/bin && ln -f test [ && chmod 755 $(BIN)
-	mv -f $(DESTDIR)$(PREFIX)/bin/xinstall $(DESTDIR)$(PREFIX)/bin/install
-	mkdir -p $(DESTDIR)$(MANPREFIX)/man1
-	for m in $(MAN); do sed "s/^\.Os sbase/.Os sbase $(VERSION)/g" < "$$m" > $(DESTDIR)$(MANPREFIX)/man1/"$$m"; done
-	cd $(DESTDIR)$(MANPREFIX)/man1 && chmod 644 $(MAN)
-	mv -f $(DESTDIR)$(MANPREFIX)/man1/xinstall.1 $(DESTDIR)$(MANPREFIX)/man1/install.1
+install uninstall:
+	scripts/mkproto $@ $(DESTDIR)$(PREFIX) $(DESTDIR)$(MANPREFIX) proto
+	scripts/$@ proto
 
-uninstall:
-	cd $(DESTDIR)$(PREFIX)/bin && rm -f $(BIN) [ install
-	cd $(DESTDIR)$(MANPREFIX)/man1 && rm -f $(MAN) install.1
+sbase-box-install: sbase-box
+	scripts/mkproto $@ $(DESTDIR)$(PREFIX) $(DESTDIR)$(MANPREFIX) proto
+	scripts/$@ proto
+	$(DESTDIR)$(PREFIX)/bin/sbase-box -i $(DESTDIR)$(PREFIX)/bin/
+
+sbase-box-uninstall: sbase-box
+	$(DESTDIR)$(PREFIX)/bin/sbase-box -d $(DESTDIR)$(PREFIX)/bin/
+	$(MAKE) uninstall
 
 dist: clean
 	mkdir -p sbase-$(VERSION)
@@ -235,21 +234,10 @@ sbase-box: $(BIN)
 	scripts/mkbox
 	$(CC) $(CFLAGS) $(CPPFLAGS) $(LDFLAGS) -o $@ build/*.c $(LIB)
 
-sbase-box-install: sbase-box
-	mkdir -p $(DESTDIR)$(PREFIX)/bin
-	mkdir -p $(DESTDIR)$(MANPREFIX)/man1
-	cp -f sbase-box $(DESTDIR)$(PREFIX)/bin
-	chmod 755 $(DESTDIR)$(PREFIX)/bin/sbase-box
-	$(DESTDIR)$(PREFIX)/bin/sbase-box -i $(DESTDIR)$(PREFIX)/bin/
-	cp -f $(MAN) $(DESTDIR)$(MANPREFIX)/man1/
-	mv -f $(DESTDIR)$(MANPREFIX)/man1/xinstall.1 $(DESTDIR)$(MANPREFIX)/man1/install.1
-
-sbase-box-uninstall: uninstall
-	cd $(DESTDIR)$(PREFIX)/bin && rm -f sbase-box
-
 clean:
 	rm -f $(BIN) $(OBJ) $(LIB) sbase-box sbase-$(VERSION).tar.gz
 	rm -f getconf.h
+	rm -f proto
 	rm -rf build
 
 .PHONY: all install uninstall dist sbase-box-install sbase-box-uninstall clean
diff --git a/scripts/install b/scripts/install
new file mode 100755
index 0000000..b391715
--- /dev/null
+++ b/scripts/install
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+set -e
+
+while read type src dst perm
+do
+	case $type in
+	d)
+		mkdir -p $src
+		;;
+	c)
+		cp $src $dst
+		;;
+	*)
+		echo install: wrong entry type >&2
+		exit 1
+		;;
+	esac
+
+	chmod $perm $dst
+done < $1
diff --git a/scripts/mkproto b/scripts/mkproto
new file mode 100755
index 0000000..0b2deb3
--- /dev/null
+++ b/scripts/mkproto
@@ -0,0 +1,24 @@
+#!/bin/sh
+
+usage()
+{
+	echo mkproto: prefix manprefix proto>&2
+	exit 1
+}
+
+prefix=${1?$(usage)}
+manprefix=${2?$(usage)}
+proto=${3?$(usage)}
+
+trap "rm -f scripts/proto" EXIT INT QUIT TERM
+
+(set -e
+echo d $prefix/bin $prefix/bin 755
+find . -maxdepth 1 -type f -perm /111 |
+sed "s@.*@c & $prefix/bin/& 755@"
+
+echo d $manprefix/man1 $manprefix/man1 755
+find . -maxdepth 1 -name '*.1' |
+sed "s@.*@c & $manprefix/man1/& 644@") > $proto
+
+trap "" EXIT INT QUIT TERM
diff --git a/scripts/uninstall b/scripts/uninstall
new file mode 100755
index 0000000..e9c74f2
--- /dev/null
+++ b/scripts/uninstall
@@ -0,0 +1,32 @@
+#!/bin/sh
+
+set -e
+
+while read type src dst perm
+do
+	case $type in
+	d)
+		echo $type $src $dst $perm
+		continue
+		;;
+	c)
+		rm -f $dst
+		;;
+	*)
+		echo uninstall: wrong entry type >&2
+		exit 1
+		;;
+	esac
+done < $1 |
+sort -r |
+while read type src dst perm
+do
+	case $type in
+	d)
+		if test `ls $dst | wc -l` -eq 0
+		then
+			rmdir $dst
+		fi
+		;;
+	esac
+done