Add prompt to refresh.sh

tools/README.txt

@@ -564,9 +564,16 @@ refresh.sh
      two configuration files is often not useful.  But tools/cmpconfig
      will show only the meaningful differences between the two
      configuration files.
+  4. It will edit the .config file to comment out the setting
+     of the CONFIG_APPS_DIR= setting.  This setting should not
+     be in checked-in defconfig files because the actually must
+     be determined at the next time that the configuration is
+     installed.
   5. Finally, the refreshed defconfig file is copied back in
      place where it can be committed with the next set of
-     difference (unless you add --dry-run) to the command line.
+     difference to the command line.  refresh.sh will prompt
+     you first to avoid overwriting the defconfig file with
+     changes that you do not want.
 `
 zipme.sh
 --------

tools/refresh.sh

@@ -32,17 +32,13 @@
 # POSSIBILITY OF SUCH DAMAGE.
 #
 
-USAGE="USAGE: $0 [--dry-run|--debug|--help] <board>/<config>"
+USAGE="USAGE: $0 [--debug|--help] <board>/<config>"
 ADVICE="Try '$0 --help' for more information"
 
 unset CONFIG
-DRYRUN=n
 
 while [ ! -z "$1" ]; do
     case $1 in
-    --dry-run )
-        DRYRUN=y
-        ;;
     --debug )
         set -x
         ;;
@@ -52,8 +48,6 @@ while [ ! -z "$1" ]; do
         echo $USAGE
         echo ""
         echo "Where:"
-        echo "  --dry-run"
-        echo "     Do no change the defconfig file"
         echo "  --debug"
         echo "     Enable script debug"
         echo "  --help"
@@ -169,16 +163,23 @@ make oldconfig
 
 # Show differences
 
+sed -i -e "s/^CONFIG_APPS_DIR/# CONFIG_APPS_DIR/g" .config
 $CMPCONFIG $DEFCONFIG .config
 
-if [ "X$DRYRUN" = "Xn" ]; then
+# Save the refreshed configuration
+
+read -p "Save the new configuration (y/n)?" -n 1 -r
+echo
+if [[ $REPLY =~ ^[Yy]$ ]]
+then
   echo "Saving the new configuration file"
-  sed -i -e "s/^CONFIG_APPS_DIR/# CONFIG_APPS_DIR/g" .config
   mv .config $DEFCONFIG || \
       { echo "ERROR: Failed to move .config to $DEFCONFIG"; exit 1; }
   chmod 644 $DEFCONFIG
 fi
 
+# Restore any previous .config file
+
 if [ -e SAVEconfig ]; then
   mv SAVEconfig .config || \
     { echo "ERROR: Failed to move SAVEconfig to .config"; exit 1; }