diff --git a/sysa/helpers.sh b/sysa/helpers.sh
index 45dc5e4e..d0a193fc 100755
--- a/sysa/helpers.sh
+++ b/sysa/helpers.sh
@@ -382,8 +382,8 @@ canonicalise_all_files_timestamp() {
 populate_device_nodes() {
     # http://www.linuxfromscratch.org/lfs/view/6.1/chapter06/devices.html
     mkdir -p "${1}/dev"
-    rm "${1}/dev/null" -f
-    test -c "${1}/dev/null" || mknod -m 666 "${1}/dev/null" c 1 3
+    test -c "${1}/dev/null" || (rm -f "${1}/dev/null" &&
+                                mknod -m 666 "${1}/dev/null" c 1 3)
     test -c "${1}/dev/zero" || mknod -m 666 "${1}/dev/zero" c 1 5
     test -c "${1}/dev/random" || mknod -m 444 "${1}/dev/random" c 1 8
     test -c "${1}/dev/urandom" || mknod -m 444 "${1}/dev/urandom" c 1 9
diff --git a/sysa/libtool-2.2.4/libtool-2.2.4.sh b/sysa/libtool-2.2.4/libtool-2.2.4.sh
index 4d3c92f7..e7dc031e 100755
--- a/sysa/libtool-2.2.4/libtool-2.2.4.sh
+++ b/sysa/libtool-2.2.4/libtool-2.2.4.sh
@@ -6,9 +6,9 @@
 src_prepare() {
     default
 
-    rm libltdl/config/ltmain.sh
+    rm -f libltdl/config/ltmain.sh
 
-    rm doc/*.info
+    rm -f doc/*.info
 
     ./bootstrap
 }
diff --git a/sysc/run.sh b/sysc/run.sh
index c8fe16ea..0389a8bb 100755
--- a/sysc/run.sh
+++ b/sysc/run.sh
@@ -18,11 +18,11 @@ create_fhs() {
     for d in bin lib sbin; do
         ln -s "usr/${d}" "/${d}"
     done
-    mkdir -p /etc /proc /run /sys /tmp /var
-    mount -t proc proc /proc
-    mount -t sysfs sysfs /sys
+    mkdir -p /etc /run /var
+    test -d /proc || (mkdir /proc && mount -t proc proc /proc)
+    test -d /sys || (mkdir /sys && mount -t sysfs sysfs /sys)
     # Make /tmp a ramdisk (speeds up configure etc significantly)
-    mount -t tmpfs tmpfs /tmp
+    test -d /tmp || (mkdir /tmp && mount -t tmpfs tmpfs /tmp)
 }
 
 populate_device_nodes ""