Fixing == -> = for dash.

hammer

 #!/bin/sh
 #
 # Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # A script to invoke scons in gyp generated projects.
 
 # Find the 'src' directory by looking for the site_scons directory.
 # This method allows trees that don't use the name src to use this script.
 # Explicitly skip site_scons directories that are from the 'software
 # construction toolkit', since these are not gyp compatible.
 SRC_DIR=`pwd`
 while `test ! -d "${SRC_DIR}/site_scons" -o \
        -e "${SRC_DIR}/site_scons/site_tools/component_setup.py"`; do
   PARENT_DIR="$(dirname ${SRC_DIR})"
-  if `test "${SRC_DIR}" == "${PARENT_DIR}"`; then
+  if `test "${SRC_DIR}" = "${PARENT_DIR}"`; then

[Mark Mentovai, 2009/08/13 19:05:13]

The backticks aren't necessary.  Same for the "while" condition above. 
Generally, where backticks can be used (line 13), $(...) is preferred.

These days, it's more common to use [ ... ] instead of test.

On line 14, prefer

while [ ! -d ... ] || [ -e ... ] ; do

because the shell will short-circuit when you use its built-in boolean
operations.

Finally, on line 16, you're missing double-quotes around ${SRC_DIR}.  The entire
rest of the script seems to be resilient about spaces in variables, save for
that line.

     echo "ERROR: hammer must be run in a directory with site_scons under" >&2
     echo "       the root of the project tree." >&2
     exit 1
   fi
   SRC_DIR="${PARENT_DIR}"
 done
 
 SCONS="${SRC_DIR}/third_party/scons/scons.py"
 SITE_SCONS="${SRC_DIR}/site_scons"
 
 exec python "${SCONS}" "--site-dir=${SITE_SCONS}" "$@"