Use existing dash vs. underscore convention for scripts.

utility/chromeos-tpm-recovery

 #!/bin/sh -u
 # 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.
 #
 # Run TPM diagnostics in recovery mode, and attempt to fix problems.  This is
 # specific to devices with chromeos firmware.
 #
-# Usage: chromeos_tpm_recovery <log file>
+# Usage: chromeos-tpm-recovery <log file>
 #
 # Most of the diagnostics examine the TPM state and try to fix it.  This may
 # require clearing TPM ownership.
 
 tpmc=${USR_BIN:=/usr/bin}/tpmc
 nvtool=${USR_LOCAL_BIN:=/usr/local/bin}/tpm-nvtool
 tpm_takeownership=${USR_LOCAL_SBIN:=/usr/local/sbin}/tpm_takeownership
 tcsd=${USR_SBIN:=/usr/sbin}/tcsd
 dot_recovery=${DOT_RECOVERY:=/mnt/stateful_partition/.recovery}
 acpi=${ACPI_DIR:=/sys/devices/platform/chromeos_acpi}
@@ skipping 308 matching lines @@
 fix_space 0x1008 0x1 0xd "01    4c 57 52 47    00 00 00 00    00 00 00 00" || \
   log "could not fix kernel space"
 
 # Cleanup: don't leave the tpm owned with the well-known password.
 if [ $tpm_owned_with_well_known_password -eq 1 ]; then
   tpm_clear_and_reenable
 fi
 
 ensure_tcsd_is_not_running
 log "tpm recovery has completed"