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

bin/cros_package_to_live

 #!/bin/bash
 
 # Copyright (c) 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 a running device with an optionally built package out
 # of your build directory
 
-# 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
 
-script_root=$(dirname $0)
-if [ -f ${script_root}/../common.sh ] ; then
-  script_root=${script_root}/..
-fi
+  SCRIPT_ROOT=
+  for path in "${common_paths[@]}"; do
+    if [ -r "${path}/common.sh" ]; then
+      SCRIPT_ROOT=${path}
+      break
+    fi
+  done
+}
 
-. "${script_root}/common.sh"
-. "${script_root}/remote_access.sh"
+find_common_sh
+. "${SCRIPT_ROOT}/common.sh" || (echo "Unable to load common.sh" && exit 1)
+# --- END COMMON.SH BOILERPLATE ---
+
+. "${SCRIPT_ROOT}/remote_access.sh" || die "Unable to load remote_access.sh"
 
 get_default_board
 
 DEFINE_boolean verbose ${FLAGS_FALSE} \
   "Whether to output verbose information for debugging."
 DEFINE_boolean build ${FLAGS_FALSE} "Build package before installing"
 DEFINE_string board "$DEFAULT_BOARD" \
     "Board for which the package should be built/found"
 DEFINE_string build_root "/build" \
     "The root location for board sysroots."
@@ skipping 52 matching lines @@
     var_mount_noexec=yes
     remote_sh "mount -o remount,exec /var"
 fi
 
 for pkg in $@; do
     latest_pkg=$(ls -tr $PKGROOT/*/${pkg}-[0-9]* | tail -1)
     if [ -z "${latest_pkg}" ]; then
         echo "Could not find latest built version of ${pkg}"
         exit 1
     fi
-    pkg_dir=$(basename $(dirname $latest_pkg))
-    pkg_name=$(basename $latest_pkg)
+    pkg_dir=$(basename "$(dirname "$latest_pkg")")
+    pkg_name=$(basename "$latest_pkg")
     echo "Installing ${latest_pkg}..."
 
     remote_sh "mktemp -d /tmp/cros_package_to_live.XXXX"
     temp_dir=$REMOTE_OUT
     remote_cp_to "${latest_pkg}" "${temp_dir}"
     remote_sh "mkdir -p /usr/portage/packages/${pkg_dir} &&
                mv ${temp_dir}/${pkg_name} /usr/portage/packages/${pkg_dir} &&
                env FEATURES=-sandbox emerge --usepkg \
                     /usr/portage/packages/${pkg_dir}/${pkg_name} 1>&2"
     echo "${pkg} has been installed"
     remote_sh "rm -rf ${temp_dir}"
 done