This starts to fix the scripts so that they load from /usr/lib/crosutils

update_kernel.sh

 #!/bin/bash
 
 # Copyright (c) 2009-2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Script to update the kernel on a live running ChromiumOS instance.
 
-# Load common constants.  This should be the first executable line.
-# The path to common.sh should be relative to your script's location.
+# --- BEGIN COMMON.SH BOILERPLATE ---
+# Load common CrOS utilities.  Inside the chroot this file is installed in
+# /usr/lib/crosutils.  Outside the chroot we find it relative to the script's
+# location.
+find_common_sh() {
+  local common_paths=(/usr/lib/crosutils $(dirname "$(readlink -f "$0")"))
+  local path
 
-. "$(dirname $0)/common.sh"
-. "$(dirname $0)/remote_access.sh"
+  SCRIPT_ROOT=
+  for path in "${common_paths[@]}"; do
+    if [ -r "${path}/common.sh" ]; then
+      SCRIPT_ROOT=${path}
+      break
+    fi
+  done
+}
+
+find_common_sh
+. "${SCRIPT_ROOT}/common.sh" || (echo "Unable to load common.sh" && exit 1)
+# --- END COMMON.SH BOILERPLATE ---
+
+. "${SCRIPT_ROOT}/remote_access.sh"
 
 # Script must be run inside the chroot.
-restart_in_chroot_if_needed $*
+restart_in_chroot_if_needed "$@"
 
 DEFINE_string board "" "Override board reported by target"
 DEFINE_string device "" "Override boot device reported by target"
 DEFINE_string partition "" "Override kernel partition reported by target"
 DEFINE_string arch "" "Override architecture reported by target"
 DEFINE_boolean modules false "Update modules on target"
 DEFINE_boolean firmware false "Update firmware on target"
 
 # Parse command line.
 FLAGS "$@" || exit 1
@@ skipping 94 matching lines @@
   fi
 
   remote_reboot
 
   remote_sh uname -r -v
   info "old kernel: ${old_kernel}"
   info "new kernel: ${REMOTE_OUT}"
 }
 
 main "$@"