Check in tofactory script.

scripts/image_signing/make_dev_ssd.sh

 #!/bin/sh
 #
 # 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.
 #
 # This script can change key (usually developer keys) and kernel config
 # of a kernels on SSD.
 
 SCRIPT_BASE="$(dirname "$0")"
 . "$SCRIPT_BASE/common.sh"
 load_shflags || exit 1
 
 # Constants used by DEFINE_*
 VBOOT_BASE='/usr/share/vboot'
 DEFAULT_KEYS_FOLDER="$VBOOT_BASE/devkeys"
 DEFAULT_BACKUP_FOLDER='/mnt/stateful_partition/backups'
 
 # DEFINE_string name default_value description flag
 DEFINE_string image "/dev/sda" "Path to device or image file" "i"
 DEFINE_string keys "$DEFAULT_KEYS_FOLDER" "Path to folder of dev keys" "k"
 DEFINE_boolean remove_rootfs_verification \
   $FLAGS_FALSE "Modify kernel boot config to disable rootfs verification" ""
 DEFINE_string backup_dir \
   "$DEFAULT_BACKUP_FOLDER" "Path of directory to store kernel backups" ""
-DEFINE_boolean debug $FLAGS_FALSE "Provide debug messages" "d"
 DEFINE_string save_config "" \
   "Base filename to store kernel configs to, instead of resigning." ""
 DEFINE_string set_config "" \
   "Base filename to load kernel configs from" ""
 
 # Parse command line
 FLAGS "$@" || exit 1
 eval set -- "$FLAGS_ARGV"
 
 # Globals
 # ----------------------------------------------------------------------------
 set -e
 
 # a log file to keep the output results of executed command
 EXEC_LOG="$(make_temp_file)"
 
 # Functions
 # ----------------------------------------------------------------------------
-# Reports error message and exit(1)
-err_die() {
-  echo "ERROR: $*" 1>&2
-  exit 1
-}
-
-# Returns true if we're running in debug mode
-is_debug_mode() {
-  [ "$FLAGS_debug" = $FLAGS_TRUE ]
-}
-
-# Prints messages (in parameters) in debug mode
-debug_msg() {
-  if is_debug_mode; then
-    echo "DEBUG: $*" 1>&2
-  fi
-}
 
 # Removes rootfs verification from kernel boot parameter
 remove_rootfs_verification() {
   echo "$*" | sed '
     s| root=/dev/dm-0 | root=/dev/sd%D%P |
     s| dm_verity[^=]*=[-0-9]*||g
     s| dm="[^"]*"||
     s| ro | rw |'
 }
 
@@ skipping 211 matching lines @@
   debug_msg "Complete."
   if [ $num_signed -gt 0 -a $num_signed -le 2 ]; then
     # signed 1 or two kernels
     echo "Successfully re-signed $num_signed kernel(s) on device $FLAGS_image".
   else
     err_die "Failed re-signing kernels."
   fi
 }
 
 main