diff --git a/mk/os161.hostlib.mk b/mk/os161.hostlib.mk
index 88517d9..d4ac6bc 100644
--- a/mk/os161.hostlib.mk
+++ b/mk/os161.hostlib.mk
@@ -56,7 +56,7 @@ all-local: $(MYBUILDDIR) .WAIT $(MYBUILDDIR)/$(_LIB_)
 install-staging-local: $(TOOLDIR)/hostlib .WAIT $(TOOLDIR)/hostlib/$(_LIB_)
 $(TOOLDIR)/hostlib/$(_LIB_): $(MYBUILDDIR)/$(_LIB_)
 	rm -f $(.TARGET)
-	ln $(MYBUILDDIR)/$(_LIB_) $(.TARGET) || \
+	ln $(MYBUILDDIR)/$(_LIB_) $(.TARGET) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(_LIB_) $(.TARGET)
 
 install-local:
diff --git a/mk/os161.hostprog.mk b/mk/os161.hostprog.mk
index 13e5984..1cb73e6 100644
--- a/mk/os161.hostprog.mk
+++ b/mk/os161.hostprog.mk
@@ -76,14 +76,14 @@ cleanhostprog:
 install-staging-local: $(_INSTALLDIR_) .WAIT $(_INSTALLDIR_)/$(_PROG_)
 $(_INSTALLDIR_)/$(_PROG_): $(MYBUILDDIR)/$(_PROG_)
 	rm -f $(.TARGET)
-	ln $(MYBUILDDIR)/$(_PROG_) $(.TARGET) || \
+	ln $(MYBUILDDIR)/$(_PROG_) $(.TARGET) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(_PROG_) $(.TARGET)
 
 .if defined(HOSTBINDIR)
 install-local: install-hostprog
 install-hostprog: $(OSTREE)$(HOSTBINDIR) $(MYBUILDDIR)/$(_PROG_)
 	rm -f $(OSTREE)$(HOSTBINDIR)/$(_PROG_)
-	ln $(MYBUILDDIR)/$(_PROG_) $(OSTREE)$(HOSTBINDIR)/$(_PROG_) || \
+	ln $(MYBUILDDIR)/$(_PROG_) $(OSTREE)$(HOSTBINDIR)/$(_PROG_) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(_PROG_) $(OSTREE)$(HOSTBINDIR)/$(_PROG_)
 .else
 install-local:
diff --git a/mk/os161.lib.mk b/mk/os161.lib.mk
index 699ee71..f9f8e53 100644
--- a/mk/os161.lib.mk
+++ b/mk/os161.lib.mk
@@ -59,13 +59,13 @@ all-local: $(MYBUILDDIR) .WAIT $(MYBUILDDIR)/$(_LIB_)
 install-staging-local: $(INSTALLTOP)$(LIBDIR) .WAIT $(INSTALLTOP)$(LIBDIR)/$(_LIB_)
 $(INSTALLTOP)$(LIBDIR)/$(_LIB_): $(MYBUILDDIR)/$(_LIB_)
 	rm -f $(.TARGET)
-	ln $(MYBUILDDIR)/$(_LIB_) $(.TARGET) || \
+	ln $(MYBUILDDIR)/$(_LIB_) $(.TARGET) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(_LIB_) $(.TARGET)
 
 install-local: $(OSTREE)$(LIBDIR) $(MYBUILDDIR)/$(_LIB_)
 	@echo "Warning: manually installing library without relinking anything"
 	rm -f $(OSTREE)$(LIBDIR)/$(_LIB_)
-	ln $(MYBUILDDIR)/$(_LIB_) $(OSTREE)$(LIBDIR)/$(_LIB_) || \
+	ln $(MYBUILDDIR)/$(_LIB_) $(OSTREE)$(LIBDIR)/$(_LIB_) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(_LIB_) $(OSTREE)$(LIBDIR)/$(_LIB_)
 
 # Build the library.
diff --git a/mk/os161.man.mk b/mk/os161.man.mk
index fb90723..4e07b00 100644
--- a/mk/os161.man.mk
+++ b/mk/os161.man.mk
@@ -44,14 +44,14 @@ install-staging-local: $(INSTALLTOP)$(MANDIR) .WAIT
 install-staging-local: $(INSTALLTOP)$(MANDIR)/$(_F_)
 $(INSTALLTOP)$(MANDIR)/$(_F_): $(_F_)
 	rm -f $(.TARGET)
-	ln $(_F_) $(.TARGET) || cp $(_F_) $(.TARGET)
+	ln $(_F_) $(.TARGET) >/dev/null 2>&1 || cp $(_F_) $(.TARGET)
 .endfor
 
 install-local: $(OSTREE)$(MANDIR) .WAIT installmanpages
 installmanpages:
 .for _F_ in $(MANFILES)
 	rm -f $(OSTREE)$(MANDIR)/$(_F_)
-	ln $(_F_) $(OSTREE)$(MANDIR)/$(_F_) || \
+	ln $(_F_) $(OSTREE)$(MANDIR)/$(_F_) >/dev/null 2>&1 || \
 	  cp $(_F_) $(OSTREE)$(MANDIR)/$(_F_)
 .endfor
 
diff --git a/mk/os161.prog.mk b/mk/os161.prog.mk
index 96876c5..a087626 100644
--- a/mk/os161.prog.mk
+++ b/mk/os161.prog.mk
@@ -61,13 +61,13 @@ cleanprog:
 install-staging-local: $(INSTALLTOP)$(BINDIR) .WAIT $(INSTALLTOP)$(BINDIR)/$(PROG)
 $(INSTALLTOP)$(BINDIR)/$(PROG): $(MYBUILDDIR)/$(PROG)
 	rm -f $(.TARGET)
-	ln $(MYBUILDDIR)/$(PROG) $(.TARGET) || \
+	ln $(MYBUILDDIR)/$(PROG) $(.TARGET) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(PROG) $(.TARGET)
 
 install-local: install-prog
 install-prog: $(OSTREE)$(BINDIR) $(MYBUILDDIR)/$(PROG)
 	rm -f $(OSTREE)$(BINDIR)/$(PROG)
-	ln $(MYBUILDDIR)/$(PROG) $(OSTREE)$(BINDIR)/$(PROG) || \
+	ln $(MYBUILDDIR)/$(PROG) $(OSTREE)$(BINDIR)/$(PROG) >/dev/null 2>&1 || \
 	  cp $(MYBUILDDIR)/$(PROG) $(OSTREE)$(BINDIR)/$(PROG)
 
 # Link the program.
diff --git a/test161/targets/asst2-single.tt b/test161/targets/asst2-single.tt
new file mode 100644
index 0000000..a8ea319
--- /dev/null
+++ b/test161/targets/asst2-single.tt
@@ -0,0 +1,51 @@
+name: asst2-single
+print_name: "ASST2 (Single)"
+description: >
+  In this assignment you will add process and system call support to your
+  OS/161 kernel. This is the single-submitter version for students that are
+  working alone and were provided the file system system calls.
+leaderboard: false
+version: 1
+points: 80
+type: asst
+kconfig: ASST2
+userland: true
+tests:
+# Process system call tests (50 points)
+  - id: syscalls/forktest.t
+    points: 15
+  - id: syscalls/shell.t
+    points: 10
+  - id: syscalls/argtest.t
+    points: 5
+  - id: syscalls/bigexec.t
+    points: 10
+  - id: syscalls/factorial.t
+    points: 5
+  - id: syscalls/add.t
+    points: 5
+# Stability tests (30 points)
+# Bad calls (5 points)
+  - id: stability/badcall/badcall-execv.t
+    points: 3
+  - id: stability/badcall/badcall-waitpid.t
+    points: 2
+# crash
+  - id: stability/crash/crash-allS.t
+    points: 3
+# randcall
+  - id: stability/randcall.t
+    points: 2
+    commands:
+      - id: /testbin/randcall
+        args:
+          - "-f"
+          - "-c 100"
+          - "-r 421"
+          - "2"
+# forkbomb
+  - id: stability/forkbomb.t
+    points: 10
+# forktest
+  - id: stability/forktest-stability.t
+    points: 10